When to plant Tomato in Zone 9b
In Zone 9b, Tomato: start seeds indoors around Dec 28–Jan 11; transplant outdoors around Feb 22–Mar 1. Expect to harvest around May 8–May 15.
| Step | When |
|---|---|
| Start seeds indoors | Dec 28 – Jan 11 |
| Transplant outdoors | Feb 22 – Mar 1 |
| Harvest | May 8 – May 15 |
Tip: Start indoors 6 weeks before last frost. Don't transplant until nights stay above 50°F (10°C).
Zone 9b averages a last spring frost around Feb 15 and a first fall frost around Dec 15. These are zone averages — look up your ZIP for your exact area.
See the full Zone 9b calendar in the tool →