When to plant Sweet Corn in Zone 9a
In Zone 9a, Sweet Corn: direct sow outdoors around Feb 28–Mar 21. Expect to harvest around May 14–Jun 4.
| Step | When |
|---|---|
| Direct sow outdoors | Feb 28 – Mar 21 |
| Harvest | May 14 – Jun 4 |
Tip: Sow in blocks (not single rows) so wind pollinates the ears well. Wait for warm soil.
Zone 9a averages a last spring frost around Feb 28 and a first fall frost around Dec 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 9a calendar in the tool →