When to plant Tomato in Zone 1b
In Zone 1b, Tomato: start seeds indoors around Apr 22–May 6; transplant outdoors around Jun 17–Jun 24. Expect to harvest around Aug 31–Sep 7.
| Step | When |
|---|---|
| Start seeds indoors | Apr 22 – May 6 |
| Transplant outdoors | Jun 17 – Jun 24 |
| Harvest | Aug 31 – Sep 7 |
Tip: Start indoors 6 weeks before last frost. Don't transplant until nights stay above 50°F (10°C).
Zone 1b averages a last spring frost around Jun 10 and a first fall frost around Aug 20. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1b calendar in the tool →