When to plant Thyme in Zone 1a
In Zone 1a, Thyme: start seeds indoors around Apr 20–May 4; transplant outdoors around Jun 15–Jun 29. Expect to harvest around Sep 3–Sep 17.
| Step | When |
|---|---|
| Start seeds indoors | Apr 20 – May 4 |
| Transplant outdoors | Jun 15 – Jun 29 |
| Harvest | Sep 3 – Sep 17 |
Tip: Perennial in most zones. Loves lean, well-drained soil — don't overwater or overfeed.
Zone 1a averages a last spring frost around Jun 15 and a first fall frost around Aug 15. These are zone averages — look up your ZIP for your exact area.
See the full Zone 1a calendar in the tool →