When to Plant Buttercup Squash in Zone 6
In USDA zone 6a, start seeds indoors around April 4, transplant or plant outdoors May 9 to August 17, and expect your first harvest around August 17. (6a shown here — see 6a and 6b dates separately below.)
Buttercup 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 17
Buttercup Squash is ready to harvest in about 100 days, needing roughly 168 frost-free days in zone 6a.
Buttercup 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 12
Buttercup Squash is ready to harvest in about 100 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 buttercup squash in the HomeSown library. Tap any for its full grow guide.
Common problems with buttercup squash
What to watch for, with identification and treatment for each
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