When to Plant Spinach in Zone 3
In USDA zone 3, start seeds indoors around March 28, transplant or plant outdoors May 2 to June 13, and expect your first harvest around June 13. Zone 3 also has a fall planting window opening around August 6.
Spinach planting calendar for USDA Zone 3
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. Dates use USDA zone 3a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 3 means for spinach
Average last spring frost
May 30
Average first fall frost
September 10
Those two dates are what set the schedule above. Zone 3 gives you roughly 103 frost-free days, and spinach need about 41 to 45 days depending on the variety to mature.
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
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