When to plant Cabbage in Zone 3a
In Zone 3a, Cabbage: start seeds indoors around Mar 30–Apr 13; transplant outdoors around May 11–May 25. Expect to harvest around Jul 20–Aug 3.
| Step | When |
|---|---|
| Start seeds indoors | Mar 30 – Apr 13 |
| Transplant outdoors | May 11 – May 25 |
| Harvest | Jul 20 – Aug 3 |
Tip: Start indoors and transplant while it's still cool. Steady moisture prevents split heads.
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 →