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When to plant spinach

Spinach timing, counted from your average last spring frost and first fall frost. Germinates poorly in warm soil (above about 75°F).

Seasoncool-season, hardy to frost
Sow outdoors6 weeks before to 3 weeks before the last frost
Fall sowing8 weeks before to 5 weeks before the first fall frost
Soil temperature to germinate35°F or warmer
Days to maturity40–50 days from seed
Spacing3–6 in apart, rows 12–18 in apart
Seed depth0.5 in

Example dates

PlaceDates
Austin, TX (78701)Sow outdoors: Jan 27–Feb 17; Fall sowing: Sep 22–Oct 13
Atlanta, GA (30303)Sow outdoors: Feb 10–Mar 3; Fall sowing: Sep 13–Oct 4
St. Louis, MO (63101)Sow outdoors: Feb 18–Mar 11; Fall sowing: Sep 9–30
Chicago, IL (60614)Sow outdoors: Feb 27–Mar 20; Fall sowing: Sep 10–Oct 1
Denver, CO (80202)Sow outdoors: Mar 19–Apr 9; Fall sowing: Aug 17–Sep 7
Seattle, WA (98101)Sow outdoors: Jan 30–Feb 20; Fall sowing: Sep 22–Oct 13

Every ZIP page has its own dates. Find your ZIP.

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Sources

Summarized in our own words from public extension publications.

All vegetables · Your ZIP's planting calendar