In USDA zone 4, the last spring frost usually falls between May 1 and May 20. Sow or plant pumpkin around Jun 9 to Jul 9. Zone 4's season is tight for pumpkin: pick the fastest varieties, start early under cover, or grow them in a greenhouse.
| Sow or plant outside | Jun 9 to Jul 9 |
|---|---|
| Harvest | Tight: the season is short for pumpkin here |
| Typical last spring frost | May 1 to May 20 |
| Typical first fall frost | around Sep 15 |
USDA zones measure winter cold, not frost dates, so these are typical dates for the zone. Towns in the same zone can be weeks apart.
Get dates for pumpkin in your exact town, not just your zone.
Get my dates free →Pies, jack-o’-lanterns, and seeds. Read the full pumpkin growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.