When to Plant Broccoli in Zone 5
In USDA zone 5a, start seeds indoors around March 3, transplant or plant outdoors April 14 to June 18, and expect your first harvest around June 18. Zone 5 also has a fall planting window opening around July 16. (5a shown here — see 5a and 5b dates separately below.)
Broccoli planting calendar for USDA Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
spring planting
Start seeds indoors
Mar 3
Transplant outdoors
Apr 14
Projected first harvest
Jun 18
fall planting
Start seeds indoors
Jun 11
Transplant outdoors
Jul 16
Projected first harvest
Sep 19
spring planting
fall planting
Most broccoli mature in about 50 to 200 days depending on the variety, needing roughly 149 frost-free days in zone 5a.
Broccoli planting calendar for USDA Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Start seeds indoors
Feb 26
Transplant outdoors
Apr 9
Projected first harvest
Jun 13
fall planting
Start seeds indoors
Jun 15
Transplant outdoors
Jul 20
Projected first harvest
Sep 23
spring planting
fall planting
Most broccoli mature in about 50 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 broccoli in the HomeSown library. Tap any for its full grow guide.
Common problems with broccoli
What to watch for, with identification and treatment for each
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