When to plant Cauliflower in Zone 10a
In Zone 10a, Cauliflower: start seeds indoors around Dec 13–Dec 27; transplant outdoors around Jan 17–Jan 31. Expect to harvest around Mar 28–Apr 11.
| Step | When |
|---|---|
| Start seeds indoors | Dec 13 – Dec 27 |
| Transplant outdoors | Jan 17 – Jan 31 |
| Harvest | Mar 28 – Apr 11 |
Tip: Fussier than broccoli — it needs cool, even conditions. Blanch heads by tying leaves over them.
Zone 10a averages a last spring frost around Jan 31 and a first fall frost around Dec 28. These are zone averages — look up your ZIP for your exact area.
See the full Zone 10a calendar in the tool →