When to plant Swiss Chard in Zone 1b
In Zone 1b, Swiss Chard: direct sow outdoors around May 27–Jun 24. Expect to harvest around Jul 21–Aug 18.
| Step | When |
|---|---|
| Direct sow outdoors | May 27 – Jun 24 |
| Harvest | Jul 21 – Aug 18 |
Tip: Heat- and cold-tolerant; pick outer leaves and it keeps producing all season.
Zone 1b averages a last spring frost around Jun 10 and a first fall frost around Aug 20. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1b calendar in the tool →