When to plant Sweet Corn in Zone 10a
In Zone 10a, Sweet Corn: direct sow outdoors around Jan 31–Feb 21. Expect to harvest around Apr 16–May 7.
| Step | When |
|---|---|
| Direct sow outdoors | Jan 31 – Feb 21 |
| Harvest | Apr 16 – May 7 |
Tip: Sow in blocks (not single rows) so wind pollinates the ears well. Wait for warm soil.
Zone 10a averages a last spring frost around Jan 31 and a first fall frost around Dec 28. These are zone averages — look up your ZIP for your exact area.
See the full Zone 10a calendar in the tool →