When to plant Basil in Zone 5b
In Zone 5b, Basil: start seeds indoors around Mar 19–Apr 2; transplant outdoors around May 7–May 21. Expect to harvest around Jul 6–Jul 20.
| Step | When |
|---|---|
| Start seeds indoors | Mar 19 – Apr 2 |
| Transplant outdoors | May 7 – May 21 |
| Harvest | Jul 6 – Jul 20 |
Tip: Extremely frost-sensitive. Keep indoors until nights are reliably warm, then pinch often.
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 →