When to plant Pumpkin in Zone 4a
In Zone 4a, Pumpkin: direct sow outdoors around May 15–Jun 5. Expect to harvest around Aug 23–Sep 13.
| Step | When |
|---|---|
| Direct sow outdoors | May 15 – Jun 5 |
| Harvest | Aug 23 – Sep 13 |
Tip: Needs lots of room and a long warm season. Count back from your fall frost for jack-o'-lanterns.
Zone 4a averages a last spring frost around May 15 and a first fall frost around Sep 18. These are zone averages — look up your ZIP for your exact area.
See the full Zone 4a calendar in the tool →