When to plant Pumpkin in Zone 3b
In Zone 3b, Pumpkin: direct sow outdoors around May 20–Jun 10. Expect to harvest around Aug 28–Sep 18.
| Step | When |
|---|---|
| Direct sow outdoors | May 20 – Jun 10 |
| Harvest | Aug 28 – Sep 18 |
Tip: Needs lots of room and a long warm season. Count back from your fall frost for jack-o'-lanterns.
Zone 3b averages a last spring frost around May 20 and a first fall frost around Sep 12. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3b calendar in the tool →