When to Plant Cauliflower in Zone 6
In USDA zone 6a, start seeds indoors around March 14, transplant or plant outdoors April 11 to July 5, and expect your first harvest around July 5. Zone 6 also has a fall planting window opening around July 4. (6a shown here — see 6a and 6b dates separately below.)
Cauliflower planting calendar for USDA Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
spring planting
Start seeds indoors
Mar 14
Transplant outdoors
Apr 11
Projected first harvest
Jul 5
fall planting
Start seeds indoors
May 30
Transplant outdoors
Jul 4
Projected first harvest
Sep 27
spring planting
fall planting
Most cauliflower mature in about 70 to 200 days depending on the variety, needing roughly 168 frost-free days in zone 6a.
Cauliflower planting calendar for USDA Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
spring planting
Start seeds indoors
Mar 9
Transplant outdoors
Apr 6
Projected first harvest
Jun 30
fall planting
Start seeds indoors
Jun 4
Transplant outdoors
Jul 9
Projected first harvest
Oct 2
spring planting
fall planting
Most cauliflower mature in about 70 to 200 days depending on the variety, needing roughly 178 frost-free days in zone 6b.
Not sure whether you're in 6a or 6b? 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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