When to plant Rosemary in Zone 11a
In Zone 11a, Rosemary: start seeds indoors around Oct 23–Nov 6; transplant outdoors around Jan 15–Jan 29. Expect to harvest around Apr 15–Apr 29.
| Step | When |
|---|---|
| Start seeds indoors | Oct 23 – Nov 6 |
| Transplant outdoors | Jan 15 – Jan 29 |
| Harvest | Apr 15 – Apr 29 |
Tip: Slow from seed and frost-tender in cold zones — most gardeners start from a plant and overwinter indoors.
Zone 11a averages a last spring frost around Jan 1 and a first fall frost around Dec 31. These are zone averages — look up your ZIP for your exact area.
See the full Zone 11a calendar in the tool →