When to plant Oregano in Zone 5b
In Zone 5b, Oregano: 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: Hardy perennial; flavour is strongest in full sun and poor soil. Trim before it flowers.
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 →