When to plant Cauliflower in Zone 9a
In Zone 9a, Cauliflower: start seeds indoors around Jan 10–Jan 24; transplant outdoors around Feb 14–Feb 28. Expect to harvest around Apr 25–May 9.
| Step | When |
|---|---|
| Start seeds indoors | Jan 10 – Jan 24 |
| Transplant outdoors | Feb 14 – Feb 28 |
| Harvest | Apr 25 – May 9 |
Tip: Fussier than broccoli — it needs cool, even conditions. Blanch heads by tying leaves over them.
Zone 9a averages a last spring frost around Feb 28 and a first fall frost around Dec 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 9a calendar in the tool →