When to plant Broccoli in Zone 10a
In Zone 10a, Broccoli: start seeds indoors around Dec 13–Dec 27; transplant outdoors around Jan 17–Jan 31; direct sow outdoors around Sep 21–Oct 12. Expect to harvest around Mar 23–Apr 6.
| Step | When |
|---|---|
| Start seeds indoors | Dec 13 – Dec 27 |
| Transplant outdoors | Jan 17 – Jan 31 |
| Direct sow outdoors | Sep 21 – Oct 12 |
| Harvest | Mar 23 – Apr 6 |
| Harvest | Nov 25 – Dec 16 |
Tip: A cool-season brassica. Transplant in early spring or late summer; it bolts in midsummer heat.
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 →