When to Plant Brussels Sprouts in New Hampshire
New Hampshire spans USDA hardiness 4a to 6b (zones 4a to 6b on this page). Plant brussels sprouts by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b
Brussels Sprouts planting calendar for New Hampshire, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
spring planting
Start seeds indoors
Mar 27
Transplant outdoors
May 1
Projected first harvest
Aug 9
fall planting
Start seeds indoors
May 17
Transplant outdoors
Jun 21
Projected first harvest
Sep 29
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 4 guide (both 4a and 4b) →
Brussels Sprouts planting calendar for New Hampshire, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
spring planting
Start seeds indoors
Mar 22
Transplant outdoors
Apr 26
Projected first harvest
Aug 4
fall planting
Start seeds indoors
May 22
Transplant outdoors
Jun 26
Projected first harvest
Oct 4
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 4 guide (both 4a and 4b) →
Brussels Sprouts planting calendar for New Hampshire, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
spring planting
Start seeds indoors
Mar 17
Transplant outdoors
Apr 21
Projected first harvest
Jul 30
fall planting
Start seeds indoors
May 28
Transplant outdoors
Jul 2
Projected first harvest
Oct 10
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 5 guide (both 5a and 5b) →
Brussels Sprouts planting calendar for New Hampshire, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Start seeds indoors
Mar 12
Transplant outdoors
Apr 16
Projected first harvest
Jul 25
fall planting
Start seeds indoors
Jun 1
Transplant outdoors
Jul 6
Projected first harvest
Oct 14
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 5 guide (both 5a and 5b) →
Brussels Sprouts planting calendar for New Hampshire, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
spring planting
Start seeds indoors
Mar 7
Transplant outdoors
Apr 11
Projected first harvest
Jul 20
fall planting
Start seeds indoors
Jun 6
Transplant outdoors
Jul 11
Projected first harvest
Oct 19
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 6 guide (both 6a and 6b) →
Brussels Sprouts planting calendar for New Hampshire, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
spring planting
Start seeds indoors
Mar 2
Transplant outdoors
Apr 6
Projected first harvest
Jul 15
fall planting
Start seeds indoors
Jun 11
Transplant outdoors
Jul 16
Projected first harvest
Oct 24
spring planting
fall planting
Brussels Sprouts is ready to harvest in about 100 days. Full zone 6 guide (both 6a and 6b) →
Not sure which half-zone you're in? 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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