Cold-season planning

Winter Sowing Planner

Eligibility comes only from explicit winter-sowing research fields.

Ready to sow

December Eligible Seeds

China Rose

Cold stratification: Required
Hardiness: Hardy

Elderberry

Cold stratification: Required
Hardiness: Hardy

Rose — Augosa (beach)

Cold stratification: Required
Hardiness: Hardy

Rosehips

Cold stratification: Required
Hardiness: Unknown

Seed research

Structured Research Fields

17 seed(s) remain unknown/unresearched. Research is displayed read-only.

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Beans need warm soil and are normally direct sown after the soil warms.
Source: University of Minnesota Extension — Growing beans in home gardens: https://extension.umn.edu/vegetables/growing-beans

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. Cold exposure is not required for bee balm, but January-February sowing is suitable for a hardy perennial.
Source: Lady Bird Johnson Wildflower Center — Monarda fistulosa seed treatment: https://www.wildflower.org/plants/result.php?id_plant=mofi | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. Sow in January-February so outdoor cold provides the required stratification period.
Source: Lady Bird Johnson Wildflower Center — Verbena hastata seed treatment: https://www.wildflower.org/plants/result.php?id_plant=veha2 | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Required
Hardiness: Hardy
Eligible months: December, January, February
Notes: Suitable for early winter sowing to provide a long natural dormancy-breaking period. Rose seed can germinate slowly and may need more than one season.
Source: USDA Forest Service — Woody Plant Seed Manual (Rosa/Sambucus): https://www.fs.usda.gov/rm/pubs_series/wo/wo_ah727.pdf | MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Required
Hardiness: Hardy
Eligible months: December, January, February
Notes: Suitable for early winter sowing, but elderberry has complex seed dormancy. A long natural cold period helps; germination may be slow or delayed beyond the first spring.
Source: Lady Bird Johnson Wildflower Center — Sambucus canadensis seed treatment: https://www.wildflower.org/plants/result.php?id_plant=sanic4 | MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: Lady Bird Johnson Wildflower Center — Solidago seed treatment: https://www.wildflower.org/plants/result.php?id_plant=SOSP2 | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; ground cherry is tender and seedlings should not be exposed to hard freezes.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Hibiscus species is not identified. Hardiness and dormancy requirements vary, so winter-sowing suitability cannot be assigned reliably.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Suitable for winter sowing as a hardy hibiscus. Sow in January-February; scarifying the seed coat may also improve germination.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Nasturtiums are frost-sensitive and are normally direct sown to avoid root disturbance.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Nasturtiums are frost-sensitive and are normally direct sown to avoid root disturbance.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Mixture contains unspecified annual, biennial and perennial species, so a reliable milk-jug winter-sowing window cannot be assigned without the species list.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: January, February
Notes: Suitable as a general perennial winter-sowing mix, but individual species may have different dormancy needs.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Unknown
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Unknown
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. This crop is normally direct sown and develops a root that is best left undisturbed.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Required
Hardiness: Hardy
Eligible months: December, January, February
Notes: Suitable for early winter sowing to provide a long natural dormancy-breaking period. Rose seed can germinate slowly and may need more than one season.
Source: USDA Forest Service — Woody Plant Seed Manual (Rosa/Sambucus): https://www.fs.usda.gov/rm/pubs_series/wo/wo_ah727.pdf | MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Suitable
Cold stratification: Required
Hardiness: Unknown
Eligible months: December, January, February
Notes: Suitable for early winter sowing to provide a long natural dormancy-breaking period. Rose seed can germinate slowly and may need more than one season.
Source: USDA Forest Service — Woody Plant Seed Manual (Rosa/Sambucus): https://www.fs.usda.gov/rm/pubs_series/wo/wo_ah727.pdf | MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. Rosemary is not winter hardy in Michigan; start indoors instead.
Source: MSU Extension — Rosemary: The herb with winter problems: https://www.canr.msu.edu/news/rosemary_the_herb_with_winter_problems

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: February, March
Notes: Suitable for milk-jug winter sowing as a hardy/cool-season seed. Sow in February-March; seedlings can handle cool spring conditions.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for the milk-jug winter-sowing workflow. This warm-season crop needs warm conditions and is better direct sown or started separately near planting time.
Source: University of Minnesota Extension — Growing summer squash and zucchini in home gardens: https://extension.umn.edu/vegetables/growing-summer-squash-and-zucchini | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Beneficial
Hardiness: Hardy
Eligible months: January, February
Notes: Good milk-jug winter-sowing candidate. January-February outdoor exposure can provide beneficial cold stratification and freeze-thaw cycles.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March; seedlings are frost-sensitive, so keep the jug protected during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for outdoor milk-jug winter sowing in Zone 6B. This is a warm-season/tender plant that needs warmer germination and growing conditions.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Unknown
Cold stratification: Unknown
Hardiness: Unknown
Eligible months: Not recorded
Notes: Not recorded
Source: Not recorded

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: Not recorded
Notes: Not recommended for milk-jug winter sowing. Melons need warmth and are especially sensitive to root disturbance.
Source: University of Minnesota Extension — Growing melons in the home garden: https://extension.umn.edu/gardening-minnesota/growing-melons-home-garden

Suitability: Not Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: Not recorded
Notes: Not recommended for the milk-jug transplant method. It is better direct sown outdoors at its normal planting time.
Source: University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing | Illinois Extension — When to plant: https://extension.illinois.edu/gardening/when-plant

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Hardy
Eligible months: January, February
Notes: Good hardy milk-jug winter-sowing candidate. Sow in January-February and let seedlings emerge naturally as conditions warm.
Source: MSU Extension — Winter sowing in containers for Michigan gardeners: https://www.canr.msu.edu/news/winter-sowing-in-containers-for-michigan-gardeners | University of Minnesota Extension — Jug it and grow: winter sowing for pollinator gardens: https://extension.umn.edu/yard-and-garden-news/jug-it-and-grow-winter-sowing-pollinator-gardens

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Suitability: Suitable
Cold stratification: Not Required
Hardiness: Tender
Eligible months: March
Notes: Late winter sow only. Sow in March because seedlings are frost-sensitive; protect during hard freezes and transplant after frost danger.
Source: Illinois Extension — January and February are prime time for winter sowing: https://extension.illinois.edu/blogs/ilriverhort/2023-12-29-january-and-february-are-prime-time-winter-sowing | University of Minnesota Extension — A Minnesota guide to garden timing: https://extension.umn.edu/yard-and-garden-news/minnesota-guide-garden-timing

Winter Sowing Planner

December Eligible Seeds

China Rose

Elderberry

Rose — Augosa (beach)

Rosehips

Structured Research Fields

54Alfalfa Not Suitable

226Amaranth Unknown

20Anise Not Suitable

214Arugula Suitable

27Ashwagandha Not Suitable

136Asters Suitable

135Asters Suitable

138Asters Suitable

137Asters Suitable

203Bachelor Button Suitable

202Bachelor Button Suitable

232Basil Unknown

45Basil Not Suitable

59Basil Not Suitable

44Basil Not Suitable

106Beans Not Suitable

187Beans Not Suitable

182Beans Not Suitable

184Beans Not Suitable

190Beans Not Suitable

188Beans Not Suitable

192Beans Not Suitable

180Beans Not Suitable

181Beans Not Suitable

183Beans Not Suitable

191Beans Not Suitable

13Beans Not Suitable

100Beans Not Suitable

146Bee Balm Suitable

96Beets Not Suitable

237Bell Pepper Unknown

231Bell Pepper Unknown

22Black Cumin Suitable

40Blue Vervain Suitable

84Broccoli Suitable

24Broccoli Suitable

171Brussel Sprouts Suitable

172Cabbage Suitable

132Cactus Not Suitable

33Calendula Suitable

32Calendula Suitable

90Cantaloupe Not Suitable

91Cantaloupe Not Suitable

92Cantaloupe Not Suitable

158Cantaloupe Not Suitable

76Carrot Not Suitable

148Carrots Not Suitable

149Carrots Not Suitable

175Cat Grass Not Suitable

16Catnip Suitable

129Celosia Suitable

130Celosia Suitable

128Celosia Suitable

25Chamomile Suitable

52Chicory Not Suitable

118China Rose Suitable

117Chinese Lantern Suitable

215Chives Suitable

173Cilantro Not Suitable

174Cilantro Not Suitable

21Citronella Not Suitable

201Cleome Suitable

119Coleus Not Suitable

70Coleus Not Suitable

228Collards Unknown

99Corn Not Suitable

185Corn Not Suitable

108Corn Not Suitable

97Corn Not Suitable

186Corn Not Suitable

98Cucumber Not Suitable

7Cucumber Not Suitable

8Cucumber Not Suitable