When to plant Swiss Chard in Zone 3a
In Zone 3a, Swiss Chard: direct sow outdoors around May 11–Jun 8. Expect to harvest around Jul 5–Aug 2.
| Step | When |
|---|---|
| Direct sow outdoors | May 11 – Jun 8 |
| Harvest | Jul 5 – Aug 2 |
Tip: Heat- and cold-tolerant; pick outer leaves and it keeps producing all season.
Zone 3a averages a last spring frost around May 25 and a first fall frost around Sep 8. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3a calendar in the tool →