Spinach

Basic Information

Seed Number

82

Seed Name

Spinach

Variety

America

Category

Vegetable

Plant Family

Amaranthaceae

Plant Type

Savoy spinach (Spinacia oleracea)

Planting Method

Direct Sow

Seed Status

In Seed Bank

Created

2026-08-14 00:50:34

Updated

2026-08-19 15:35:29

Planting Information

Start Planting Date

Mar 15

Last Recommended Planting Date

Sep 15

Plantable Months

March, April, May, August, September

Indoor Start

Not recorded

Direct Sow

Mar 15 – Sep 15

Transplant

Not Recommended

Indoor Start Weeks Before Frost

Not Recommended

Transplant Weeks After Frost

Not Recommended

Germination Days

5–21 days

Harvest/Maturity

43–55 days

Succession Planting

14 days

Growing Conditions

Ideal Soil Temperature

45-70°F

Planting Depth

1/2 in

Plant Spacing

4-6 in

Row Spacing

18-30 in

Thin-To Spacing

4-6 in

Sun Requirements

Full sun to partial shade

Water Needs

About 1 in/week; maintain even moisture for tender leaves

Soil Preference

Fertile, well-drained soil high in organic matter; approximately pH 6.0-7.0

Minimum Container Size

6-8 in deep

Plant Height

About 8 in

Perennial/Biennial Status

Annual

Container Friendly

Yes

Trellis/Support Needed

No

Frost Tolerant

Yes

Heat Tolerant

Yes

Drought Tolerant

Yes

Pollinator Friendly

No

Medicinal

No

Garden Uses

Companion Planting

Storage

Seed Source/Brand

MSU Extension; Detroit frost dates; Almanac Detroit

Packet Year

Not recorded

Quantity Notes

Not recorded

Purchase Date

Not recorded

Expiration Year

Not recorded

Storage Box

Not recorded

Container

Not recorded

Envelope

Not recorded

Row

Not recorded

Slot

Not recorded

Storage Notes

Not recorded

Notes

Original Planting Method: Direct sow
Outdoor / Direct Sow / Transplant Window: Mar 25 – May 1; Aug 15 – Sep 5
Days to Harvest / Bloom: 35–50 days
Medicinal / Herbal Use: Culinary
Succession / Reusable Notes: Best spring/fall crop. Avoid hot midsummer sowing.
Zone 6B Notes: Bolts quickly with heat and long days.
Companion Plants: Strawberries, peas, beans, brassicas, onions, radish, calendula
Avoid Planting Near / Watch Outs: Hot midsummer beds
Sources: MSU Extension: https://www.canr.msu.edu/resources/garden_planning_calendar | Detroit frost dates: https://www.ufseeds.com/vegetable-planting-calendar-detroit-michigan.html | Almanac Detroit: https://www.almanac.com/gardening/planting-calendar/MI/Detroit

[[RESEARCH ENRICHMENT START]]
Zone 6B: America is more heat- and bolt-resistant than many traditional spinach varieties but remains fundamentally a cool-season crop. Sow very early in spring and again in late summer for fall harvest.
Germination: Spinach can germinate slowly in very cold soil and rapidly around 70-75°F, but germination percentage declines as soil becomes too warm.
Harvest: Harvest outer leaves individually or cut whole plants before bolting. America is suited to fresh eating, freezing and canning.
Seed Saving: Spinach is wind-pollinated and plants are male or female. Substantial isolation from other flowering spinach varieties is required for pure seed.
Special Care: America is also known as American Long Standing. It is a slow-bolting Bloomsdale-type spinach noted for better heat and drought tolerance than many older spinach varieties.
Research Source: Victory Seed Company — https://victoryseeds.com/products/america-spinach — 43-55 day maturity, 8-inch height, savoyed leaves, slow bolting and heat/drought resistance
Research Source: Sow True Seed — https://sowtrueseed.com/products/spinach-america — 1/2-inch sowing depth, 4-6 inch thinning and approximately 1 inch/week water
Research Source: University of Minnesota Extension — https://extension.umn.edu/vegetables/growing-spinach-and-swiss-chard — spinach spacing, cool-season planting and soil requirements
[[RESEARCH ENRICHMENT END]]