Parsley in Zone 10a & 10b
Petroselinum crispum
When to plant parsley 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. In your zone, Parsley needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Fall window |
|---|---|
| Start indoors | Jul–Mar |
| Direct sow / transplant outside | Oct–Apr |
| Estimated harvest | Dec 15–Jul 14 '27 (~75 days after transplanting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 0.5-1 ft.
Zone 10b dates sourced from growinginthegarden.com.
Parsley is technically a biennial, not an annual, though most gardeners never see the second year. It's usually grown and harvested in its first season, then replaced the following spring rather than left to bolt and flower in year two.
How parsley fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Parsley needs about 75 days from sowing to first harvest.
Good companions
- Tomato: Classic pairing. Parsley attracts beneficial insects near tomatoes.
Where to buy parsley seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing parsley" 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 Parsley in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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