When to plant Swiss Chard in Zone 10b
In Zone 10b, Swiss Chard: direct sow outdoors around Jan 1–Jan 29. Expect to harvest around Feb 25–Mar 25.
| Step | When |
|---|---|
| Direct sow outdoors | Jan 1 – Jan 29 |
| Harvest | Feb 25 – Mar 25 |
Tip: Heat- and cold-tolerant; pick outer leaves and it keeps producing all season.
Zone 10b averages a last spring frost around Jan 15 and a first fall frost around Dec 31. These are zone averages — look up your ZIP for your exact area.
See the full Zone 10b calendar in the tool →