When to plant Tomato in Zone 10a
In Zone 10a, Tomato: start seeds indoors around Dec 13–Dec 27; transplant outdoors around Feb 7–Feb 14. Expect to harvest around Apr 23–Apr 30.
| Step | When |
|---|---|
| Start seeds indoors | Dec 13 – Dec 27 |
| Transplant outdoors | Feb 7 – Feb 14 |
| Harvest | Apr 23 – Apr 30 |
Tip: Start indoors 6 weeks before last frost. Don't transplant until nights stay above 50°F (10°C).
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 →