When to Plant Pumpkins in Zone 3
In USDA zone 3a, start seeds indoors around May 9, transplant or plant outdoors June 13 to September 10. (3a shown here — see 3a and 3b dates separately below.)
Pumpkins planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Start seeds indoors
May 9
Transplant outdoors
Jun 13
Pumpkins needs about 100 to 130 days depending on the variety to mature — longer than zone 3atypically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Pumpkins planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Start seeds indoors
Apr 29
Transplant outdoors
Jun 3
Pumpkins needs about 100 to 130 days depending on the variety to mature — longer than zone 3btypically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Not sure whether you're in 3a or 3b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
4 varieties of pumpkins in the HomeSown library. Tap any for its full grow guide.
Common problems with pumpkins
What to watch for, with identification and treatment for each
🌱 Grow pumpkins 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 →