When to Plant Spinach in Zone 5
In USDA zone 5a, start seeds indoors around March 3, transplant or plant outdoors April 7 to May 19, and expect your first harvest around May 19. Zone 5 also has a fall planting window opening around August 27. (5a shown here — see 5a and 5b dates separately below.)
Spinach planting calendar for USDA 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, needing roughly 149 frost-free days in zone 5a.
Spinach planting calendar for USDA Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Start seeds indoors
Feb 26
Transplant outdoors
Apr 2
Projected first harvest
May 14
fall planting
Direct sow
Aug 31
Projected first harvest
Oct 12
spring planting
fall planting
Most spinach mature in about 41 to 45 days depending on the variety, needing roughly 158 frost-free days in zone 5b.
Not sure whether you're in 5a or 5b? 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
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →