When to plant Winter Squash in Zone 1a
In Zone 1a, Winter Squash: direct sow outdoors around Jun 15–Jul 6. Expect to harvest around Sep 18–Oct 9.
| Step | When |
|---|---|
| Direct sow outdoors | Jun 15 – Jul 6 |
| Harvest | Sep 18 – Oct 9 |
Tip: Harvest when the rind is hard and can't be dented by a thumbnail, then cure for storage.
Zone 1a averages a last spring frost around Jun 15 and a first fall frost around Aug 15. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1a calendar in the tool →