Oregano in Zone 10a & 10b
Origanum vulgare
When to plant oregano in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Oregano needs a head start most zones can't give it by direct-sowing alone.
| Window | Spring window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Feb–Apr |
| Estimated harvest | Apr 22–Jul 19 (~80 days after transplanting) |
| Window | Fall window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Oct–Nov |
| Estimated harvest | Dec 20–Feb 18 '27 (~80 days after transplanting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.
Zone 10b dates sourced from growinginthegarden.com.
Oregano is a low, spreading perennial in the mint family, and one of the more forgiving herbs you can grow. It performs better in lean, dry soil than in rich, well-watered beds.
How oregano fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Oregano needs about 80 days from transplant to first harvest.
Good companions
- Pepper: Low, spreading habit fills gaps without competing for light.
Where to buy oregano seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing oregano" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 10b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Oregano in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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