When to plant Swiss Chard in Zone 12b
In Zone 12b, Swiss Chard: direct sow outdoors around Dec 18–Jan 15. Expect to harvest around Feb 11–Mar 11.
| Step | When |
|---|---|
| Direct sow outdoors | Dec 18 – Jan 15 |
| Harvest | Feb 11 – Mar 11 |
Tip: Heat- and cold-tolerant; pick outer leaves and it keeps producing all season.
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 →