When to plant Thyme in Zone 5b
In Zone 5b, Thyme: start seeds indoors around Mar 5–Mar 19; transplant outdoors around Apr 30–May 14. Expect to harvest around Jul 19–Aug 2.
| Step | When |
|---|---|
| Start seeds indoors | Mar 5 – Mar 19 |
| Transplant outdoors | Apr 30 – May 14 |
| Harvest | Jul 19 – Aug 2 |
Tip: Perennial in most zones. Loves lean, well-drained soil — don't overwater or overfeed.
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 →