When to Plant Cauliflower in Zone 5
In USDA zone 5a, start seeds indoors around March 24, transplant or plant outdoors April 21 to July 15, and expect your first harvest around July 15. Zone 5 also has a fall planting window opening around June 25. (5a shown here — see 5a and 5b dates separately below.)
Cauliflower planting calendar for USDA Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
spring planting
Start seeds indoors
Mar 24
Transplant outdoors
Apr 21
Projected first harvest
Jul 15
fall planting
Start seeds indoors
May 21
Transplant outdoors
Jun 25
Projected first harvest
Sep 18
spring planting
fall planting
Most cauliflower mature in about 70 to 200 days depending on the variety, needing roughly 149 frost-free days in zone 5a.
Cauliflower planting calendar for USDA Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Start seeds indoors
Mar 19
Transplant outdoors
Apr 16
Projected first harvest
Jul 10
fall planting
Start seeds indoors
May 25
Transplant outdoors
Jun 29
Projected first harvest
Sep 22
spring planting
fall planting
Most cauliflower mature in about 70 to 200 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
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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