When to plant Broccoli in Zone 10b
In Zone 10b, Broccoli: start seeds indoors around Nov 27–Dec 11; transplant outdoors around Jan 1–Jan 15; direct sow outdoors around Sep 24–Oct 15. Expect to harvest around Mar 7–Mar 21.
| Step | When |
|---|---|
| Start seeds indoors | Nov 27 – Dec 11 |
| Transplant outdoors | Jan 1 – Jan 15 |
| Direct sow outdoors | Sep 24 – Oct 15 |
| Harvest | Mar 7 – Mar 21 |
| Harvest | Nov 28 – Dec 19 |
Tip: A cool-season brassica. Transplant in early spring or late summer; it bolts in midsummer heat.
Zone 10b averages a last spring frost around Jan 15 and a first fall frost around Dec 31. These are zone averages — look up your ZIP for your exact area.
See the full Zone 10b calendar in the tool →