When to plant Cauliflower in Zone 1b
In Zone 1b, Cauliflower: start seeds indoors around Apr 22–May 6; transplant outdoors around May 27–Jun 10. Expect to harvest around Aug 5–Aug 19.
| Step | When |
|---|---|
| Start seeds indoors | Apr 22 – May 6 |
| Transplant outdoors | May 27 – Jun 10 |
| Harvest | Aug 5 – Aug 19 |
Tip: Fussier than broccoli — it needs cool, even conditions. Blanch heads by tying leaves over them.
Zone 1b averages a last spring frost around Jun 10 and a first fall frost around Aug 20. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1b calendar in the tool →