When to plant Watermelon in Zone 2b
In Zone 2b, Watermelon: start seeds indoors around May 2–May 16; transplant outdoors around Jun 13–Jun 20; direct sow outdoors around Jun 6–Jun 20. Expect to harvest around Aug 30–Sep 13.
| Step | When |
|---|---|
| Start seeds indoors | May 2 – May 16 |
| Transplant outdoors | Jun 13 – Jun 20 |
| Direct sow outdoors | Jun 6 – Jun 20 |
| Harvest | Aug 30 – Sep 13 |
| Harvest | Sep 6 – Sep 13 |
Tip: Needs heat and a long season. In short-summer zones, start indoors and use black plastic to warm the soil.
Zone 2b averages a last spring frost around May 30 and a first fall frost around Sep 1. These are zone averages — look up your ZIP for your exact area.
See the full Zone 2b calendar in the tool →