When to plant Sweet Corn in Zone 5b
In Zone 5b, Sweet Corn: direct sow outdoors around Apr 30–May 21. Expect to harvest around Jul 14–Aug 4.
| Step | When |
|---|---|
| Direct sow outdoors | Apr 30 – May 21 |
| Harvest | Jul 14 – Aug 4 |
Tip: Sow in blocks (not single rows) so wind pollinates the ears well. Wait for warm soil.
Zone 5b averages a last spring frost around Apr 30 and a first fall frost around Oct 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 5b calendar in the tool →