In USDA zone 6, the last spring frost usually falls between Apr 5 and Apr 30. Sow or plant sweet corn around May 5 to Jun 16. Expect to harvest around Jul 29 to Sep 28.
| Sow or plant outside | May 5 to Jun 16 |
|---|---|
| Harvest | Jul 29 to Sep 28 |
| Typical last spring frost | Apr 5 to Apr 30 |
| Typical first fall frost | around Oct 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 →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.