When to plant Kale in Zone 3b
In Zone 3b, Kale: start seeds indoors around Apr 8–Apr 22; transplant outdoors around May 6–May 20; direct sow outdoors around May 6–Jun 3; direct sow outdoors around Jun 20–Jul 18. Expect to harvest around Jul 5–Jul 19.
| Step | When |
|---|---|
| Start seeds indoors | Apr 8 – Apr 22 |
| Transplant outdoors | May 6 – May 20 |
| Direct sow outdoors | May 6 – Jun 3 |
| Direct sow outdoors | Jun 20 – Jul 18 |
| Harvest | Jul 5 – Jul 19 |
| Harvest | Jul 5 – Aug 2 |
| Harvest | Aug 19 – Sep 16 |
Tip: Frost actually sweetens the leaves. Excellent for fall and overwintering in mild zones.
Zone 3b averages a last spring frost around May 20 and a first fall frost around Sep 12. These are zone averages — look up your ZIP for your exact area.
See the full Zone 3b calendar in the tool →