When to plant winter squash in zone 3
In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Sow or plant winter squash around Jun 16 to Jul 16. Zone 3's season is tight for winter squash: pick the fastest varieties, start early under cover, or grow them in a greenhouse.
Zone 3 dates for winter squash
| Sow or plant outside | Jun 16 to Jul 16 |
|---|---|
| Harvest | Tight: the season is short for winter squash here |
| Typical last spring frost | May 5 to May 31 |
| 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 winter squash in your exact town, not just your zone.
Get my dates free →How to grow winter squash
Grow once, eat all winter. Read the full winter squash growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.