When to plant sweet corn in zone 3
In USDA zone 3, the last spring frost usually falls between May 5 and May 31. Sow or plant sweet corn around Jun 4 to Jul 16. Expect to harvest around Aug 28 to Sep 15.
Zone 3 dates for sweet corn
| Sow or plant outside | Jun 4 to Jul 16 |
|---|---|
| Harvest | Aug 28 to Sep 15 |
| 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 sweet corn in your exact town, not just your zone.
Get my dates free →How to grow sweet corn
Summer on the cob — grow it in a block. Read the full sweet corn growing guide: spacing, sun and soil, step-by-step care, problems and the best varieties.