When to Plant Spinach in Minnesota
Minnesota spans USDA hardiness 3a to 5a (zones 3a to 5a on this page). Plant spinach by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 3a · Zone 3b · Zone 4a · Zone 4b · Zone 5a
Spinach planting calendar for Minnesota, Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
spring planting
Start seeds indoors
Mar 28
Transplant outdoors
May 2
Projected first harvest
Jun 13
fall planting
Direct sow
Aug 6
Projected first harvest
Sep 17
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety. Full zone 3 guide (both 3a and 3b) →
Spinach planting calendar for Minnesota, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
spring planting
Start seeds indoors
Mar 18
Transplant outdoors
Apr 22
Projected first harvest
Jun 3
fall planting
Direct sow
Aug 11
Projected first harvest
Sep 22
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety. Full zone 3 guide (both 3a and 3b) →
Spinach planting calendar for Minnesota, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
spring planting
Start seeds indoors
Mar 13
Transplant outdoors
Apr 17
Projected first harvest
May 29
fall planting
Direct sow
Aug 16
Projected first harvest
Sep 27
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Spinach planting calendar for Minnesota, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
spring planting
Start seeds indoors
Mar 8
Transplant outdoors
Apr 12
Projected first harvest
May 24
fall planting
Direct sow
Aug 21
Projected first harvest
Oct 2
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Spinach planting calendar for Minnesota, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
spring planting
Start seeds indoors
Mar 3
Transplant outdoors
Apr 7
Projected first harvest
May 19
fall planting
Direct sow
Aug 27
Projected first harvest
Oct 8
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
3 varieties of spinach in the HomeSown library. Tap any for its full grow guide.
Common problems with spinach
What to watch for, with identification and treatment for each
🌱 Grow spinach with a calendar built for your exact yard
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