When to plant Cauliflower in Zone 6b
In Zone 6b, Cauliflower: start seeds indoors around Feb 25–Mar 11; transplant outdoors around Apr 1–Apr 15. Expect to harvest around Jun 10–Jun 24.
| Step | When |
|---|---|
| Start seeds indoors | Feb 25 – Mar 11 |
| Transplant outdoors | Apr 1 – Apr 15 |
| Harvest | Jun 10 – Jun 24 |
Tip: Fussier than broccoli — it needs cool, even conditions. Blanch heads by tying leaves over them.
Zone 6b averages a last spring frost around Apr 15 and a first fall frost around Oct 25. These are zone averages — look up your ZIP for your exact area.
See the full Zone 6b calendar in the tool →