When to Plant Brussels Sprouts in Zone 3
In USDA zone 3a, start seeds indoors around April 11, transplant or plant outdoors May 16 to August 24, and expect your first harvest around August 24. Zone 3 also has a fall planting window opening around June 11. (3a shown here — see 3a and 3b dates separately below.)
Brussels Sprouts planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
spring planting
Start seeds indoors
Apr 11
Transplant outdoors
May 16
Projected first harvest
Aug 24
fall planting
Start seeds indoors
May 7
Transplant outdoors
Jun 11
Projected first harvest
Sep 19
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days, needing roughly 103 frost-free days in zone 3a.
Brussels Sprouts planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
spring planting
Start seeds indoors
Apr 1
Transplant outdoors
May 6
Projected first harvest
Aug 14
fall planting
Start seeds indoors
May 12
Transplant outdoors
Jun 16
Projected first harvest
Sep 24
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days, needing roughly 118 frost-free days in zone 3b.
Not sure whether you're in 3a or 3b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of brussels sprouts in the HomeSown library. Tap any for its full grow guide.
Common problems with brussels sprouts
What to watch for, with identification and treatment for each
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