When to Plant Kale in New Hampshire
New Hampshire spans USDA hardiness 4a to 6b (zones 4a to 6b on this page). Plant kale 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
Kale 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 13
Transplant outdoors
Apr 17
Projected first harvest
Jun 11
fall planting
Start seeds indoors
Jun 28
Transplant outdoors
Aug 2
Projected first harvest
Sep 26
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Kale 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 8
Transplant outdoors
Apr 12
Projected first harvest
Jun 6
fall planting
Start seeds indoors
Jul 3
Transplant outdoors
Aug 7
Projected first harvest
Oct 1
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Kale 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 3
Transplant outdoors
Apr 7
Projected first harvest
Jun 1
fall planting
Start seeds indoors
Jul 9
Transplant outdoors
Aug 13
Projected first harvest
Oct 7
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Kale planting calendar for New Hampshire, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Start seeds indoors
Feb 26
Transplant outdoors
Apr 2
Projected first harvest
May 27
fall planting
Start seeds indoors
Jul 13
Transplant outdoors
Aug 17
Projected first harvest
Oct 11
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Kale planting calendar for New Hampshire, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
spring planting
Start seeds indoors
Feb 21
Transplant outdoors
Mar 28
Projected first harvest
May 22
fall planting
Start seeds indoors
Jul 18
Transplant outdoors
Aug 22
Projected first harvest
Oct 16
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Kale planting calendar for New Hampshire, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
spring planting
Start seeds indoors
Feb 16
Transplant outdoors
Mar 23
Projected first harvest
May 17
fall planting
Start seeds indoors
Jul 23
Transplant outdoors
Aug 27
Projected first harvest
Oct 21
spring planting
fall planting
Most kale mature in about 55 to 60 days depending on the variety. 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
3 varieties of kale in the HomeSown library. Tap any for its full grow guide.
Common problems with kale
What to watch for, with identification and treatment for each
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