When to plant Sweet Corn in Zone 12b
In Zone 12b, Sweet Corn: direct sow outdoors around Jan 1–Jan 22. Expect to harvest around Mar 17–Apr 7.
| Step | When |
|---|---|
| Direct sow outdoors | Jan 1 – Jan 22 |
| Harvest | Mar 17 – Apr 7 |
Tip: Sow in blocks (not single rows) so wind pollinates the ears well. Wait for warm soil.
Zone 12b averages a last spring frost around Jan 1 and a first fall frost around Dec 31. These are zone averages — look up your ZIP for your exact area.
See the full Zone 12b calendar in the tool →