When to plant Tomato in Zone 5b
In Zone 5b, Tomato: start seeds indoors around Mar 12–Mar 26; transplant outdoors around May 7–May 14. Expect to harvest around Jul 21–Jul 28.
| Step | When |
|---|---|
| Start seeds indoors | Mar 12 – Mar 26 |
| Transplant outdoors | May 7 – May 14 |
| Harvest | Jul 21 – Jul 28 |
Tip: Start indoors 6 weeks before last frost. Don't transplant until nights stay above 50°F (10°C).
Zone 5b averages a last spring frost around Apr 30 and a first fall frost around Oct 5. These are zone averages — look up your ZIP for your exact area.
See the full Zone 5b calendar in the tool →