When to Plant Kale in Zone 4
In USDA zone 4, start seeds indoors around March 13, transplant or plant outdoors April 17 to June 11, and expect your first harvest around June 11. Zone 4 also has a fall planting window opening around August 2.
Kale planting calendar for USDA Zone 4
spring planting
Start seeds indoors
Mar 13
Transplant outdoors
Apr 17
Projected first harvest
Jun 11
fall planting
Start seeds indoors
Jun 28
Transplant outdoors
Aug 2
Projected first harvest
Sep 26
spring planting
fall planting
Most kale mature in about 55 to 60 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 kale
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 kale need about 55 to 60 days depending on the variety to mature.
Varieties to grow
3 varieties of kale in the HomeSown library. Tap any for its full grow guide.
Common problems with kale
What to watch for, with identification and treatment for each
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