When to plant Sweet Corn in Zone 9b
In Zone 9b, Sweet Corn: direct sow outdoors around Feb 15–Mar 8. Expect to harvest around May 1–May 22.
| Step | When |
|---|---|
| Direct sow outdoors | Feb 15 – Mar 8 |
| Harvest | May 1 – May 22 |
Tip: Sow in blocks (not single rows) so wind pollinates the ears well. Wait for warm soil.
Zone 9b averages a last spring frost around Feb 15 and a first fall frost around Dec 15. These are zone averages — look up your ZIP for your exact area.
See the full Zone 9b calendar in the tool →