When to plant Watermelon in Zone 6a
In Zone 6a, Watermelon: start seeds indoors around Mar 24–Apr 7; transplant outdoors around May 5–May 12; direct sow outdoors around Apr 28–May 12. Expect to harvest around Jul 22–Aug 5.
| Step | When |
|---|---|
| Start seeds indoors | Mar 24 – Apr 7 |
| Transplant outdoors | May 5 – May 12 |
| Direct sow outdoors | Apr 28 – May 12 |
| Harvest | Jul 22 – Aug 5 |
| Harvest | Jul 29 – Aug 5 |
Tip: Needs heat and a long season. In short-summer zones, start indoors and use black plastic to warm the soil.
Zone 6a averages a last spring frost around Apr 21 and a first fall frost around Oct 17. These are zone averages — look up your ZIP for your exact area.
See the full Zone 6a calendar in the tool →