When to Plant Spinach in Zone 4
In USDA zone 4, start seeds indoors around March 13, transplant or plant outdoors April 17 to May 29, and expect your first harvest around May 29. Zone 4 also has a fall planting window opening around August 16.
Spinach planting calendar for USDA Zone 4
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. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for spinach
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 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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