When to Plant Cauliflower in Zone 3
In USDA zone 3, start seeds indoors around April 18, transplant or plant outdoors May 16 to August 9, and expect your first harvest around August 9. Zone 3 also has a fall planting window opening around June 4.
Cauliflower planting calendar for USDA Zone 3
spring planting
Start seeds indoors
Apr 18
Transplant outdoors
May 16
Projected first harvest
Aug 9
fall planting
Start seeds indoors
Apr 30
Transplant outdoors
Jun 4
Projected first harvest
Aug 28
spring planting
fall planting
Most cauliflower mature in about 70 to 200 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 cauliflower
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 cauliflower need about 70 to 200 days depending on the variety to mature.
Varieties to grow
4 varieties of cauliflower in the HomeSown library. Tap any for its full grow guide.
Common problems with cauliflower
What to watch for, with identification and treatment for each
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