When to plant Tomato in Zone 9a
In Zone 9a, Tomato: start seeds indoors around Jan 10–Jan 24; transplant outdoors around Mar 7–Mar 14. Expect to harvest around May 21–May 28.
| Step | When |
|---|---|
| Start seeds indoors | Jan 10 – Jan 24 |
| Transplant outdoors | Mar 7 – Mar 14 |
| Harvest | May 21 – May 28 |
Tip: Start indoors 6 weeks before last frost. Don't transplant until nights stay above 50°F (10°C).
Zone 9a averages a last spring frost around Feb 28 and a first fall frost around Dec 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 9a calendar in the tool →