When to plant watermelon in zone 3
In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Sow or plant watermelon around Jun 10 to Jul 10. Zone 3's season is tight for watermelon: pick the fastest varieties, start early under cover, or grow them in a greenhouse.
Zone 3 dates for watermelon
| Sow or plant outside | Jun 10 to Jul 10 |
|---|---|
| Harvest | Tight: the season is short for watermelon here |
| Typical last spring frost | May 5 to May 31 |
| Typical first fall frost | around Sep 15 |
USDA zones measure winter cold, not frost dates, so these are typical dates for the zone. Towns in the same zone can be weeks apart.
Get dates for watermelon in your exact town, not just your zone.
Get my dates free →How to grow watermelon
Summer’s big sweet payoff. Read the full watermelon growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.