When to Plant Buttercup Squash in Zone 9
In USDA zone 9, start seeds indoors around February 8, transplant or plant outdoors March 15 to June 23, and expect your first harvest around June 23.
Buttercup Squash planting calendar for USDA Zone 9
Start seeds indoors
Feb 8
Transplant outdoors
Mar 15
Projected first harvest
Jun 23
Buttercup Squash is ready to harvest in about 100 days. Dates use USDA zone 9a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 9 means for buttercup squash
Average last spring frost
March 1
Average first fall frost
December 1
Those two dates are what set the schedule above. Zone 9 gives you roughly 275 frost-free days, and buttercup squash need about 100 days to mature.
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
🌱 Grow buttercup squash with a calendar built for your exact yard
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →