When to plant Basil in Zone 6a
In Zone 6a, Basil: start seeds indoors around Mar 10–Mar 24; transplant outdoors around Apr 28–May 12. Expect to harvest around Jun 27–Jul 11.
| Step | When |
|---|---|
| Start seeds indoors | Mar 10 – Mar 24 |
| Transplant outdoors | Apr 28 – May 12 |
| Harvest | Jun 27 – Jul 11 |
Tip: Extremely frost-sensitive. Keep indoors until nights are reliably warm, then pinch often.
Zone 6a averages a last spring frost around Apr 21 and a first fall frost around Oct 17. These are zone averages — look up your ZIP for your exact area.
See the full Zone 6a calendar in the tool →