When to Plant Butternut Squash in Zone 6
In USDA zone 6a, start seeds indoors around April 4, transplant or plant outdoors May 9 to August 22, and expect your first harvest around August 22. (6a shown here — see 6a and 6b dates separately below.)
Butternut Squash planting calendar for USDA Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Apr 4
Transplant outdoors
May 9
Projected first harvest
Aug 22
Butternut Squash is ready to harvest in about 105 days, needing roughly 168 frost-free days in zone 6a.
Butternut Squash planting calendar for USDA Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Mar 30
Transplant outdoors
May 4
Projected first harvest
Aug 17
Butternut Squash is ready to harvest in about 105 days, 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
1 variety of butternut squash in the HomeSown library. Tap any for its full grow guide.
Common problems with butternut squash
What to watch for, with identification and treatment for each
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