When to plant Winter Squash in Zone 1b
In Zone 1b, Winter Squash: direct sow outdoors around Jun 10–Jul 1. Expect to harvest around Sep 13–Oct 4.
| Step | When |
|---|---|
| Direct sow outdoors | Jun 10 – Jul 1 |
| Harvest | Sep 13 – Oct 4 |
Tip: Harvest when the rind is hard and can't be dented by a thumbnail, then cure for storage.
Zone 1b averages a last spring frost around Jun 10 and a first fall frost around Aug 20. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1b calendar in the tool →