When to plant Rosemary in Zone 8a
In Zone 8a, Rosemary: start seeds indoors around Jan 11–Jan 25; transplant outdoors around Apr 5–Apr 19. Expect to harvest around Jul 4–Jul 18.
| Step | When |
|---|---|
| Start seeds indoors | Jan 11 – Jan 25 |
| Transplant outdoors | Apr 5 – Apr 19 |
| Harvest | Jul 4 – Jul 18 |
Tip: Slow from seed and frost-tender in cold zones — most gardeners start from a plant and overwinter indoors.
Zone 8a averages a last spring frost around Mar 22 and a first fall frost around Nov 18. These are zone averages — look up your ZIP for your exact area.
See the full Zone 8a calendar in the tool →