Parsley in Zone 10a & 10b
Petroselinum crispum
Yes, parsley grows in zones 10a and 10b. Start seeds indoors in Jul–Mar and plant out in Oct–Apr. For a fall crop, start seeds indoors in Jul–Mar and plant out in Oct–Apr.
When to plant parsley in zone 10b
Zones 10a and 10b share the same average frost dates, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. In your zone it 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 | ~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.
Fall window: the last sowing date is the average first frost minus days to maturity, the method in Purdue Extension's fall garden guide, which lists parsley for late-summer planting.
Plant alongside it in zone 10b
These go outside within two weeks of parsley in zone 10b, so one planting day can cover them.
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.
Parsley planting windows in every zone
Zone 10b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 3a & 3b | Apr 4–Apr 11 | May 16–May 23 | Jul 30–Aug 6 |
| 4a & 4b | Mar 20–Mar 27 | May 1–May 8 | Jul 15–Jul 22 |
| 5a & 5b | Mar 15–Mar 22 | Apr 26–May 3 | Jul 10–Jul 17 |
| 6a & 6b | Feb 28–Mar 7 | Apr 11–Apr 18 | Jun 25–Jul 2 |
| 7a & 7b | Feb 13–Feb 20 | Mar 27–Apr 3 | Jun 10–Jun 17 |
| 8a & 8b | Jan 28–Feb 4 | Mar 11–Mar 18 | May 25–Jun 1 |
| 9a & 9b | Dec 21–Dec 28 | Feb 1–Feb 8 | Apr 17–Apr 24 |
| 10a & 10bFall window (your zone) | Jul–Mar | Oct–Apr | ~75 days after transplanting |
Harvest dates are about 75 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
- Tomato: Classic pairing. Parsley attracts beneficial insects near tomatoes.
Where to buy parsley seeds
Botanical Interests · True Leaf Market · Burpee · High Mowing Organic Seeds (each supplier's parsley seeds)
Varieties we recommend, and where to get them:
- Gigante d'Italia (Giant of Italy): The most-reviewed top variety in Cornell's Vegetable Varieties for Gardeners database (4.5 stars, 20 reviews), a flat-leaf Italian type with large, dark green leaves at 70-75 days, closely matching the flavor most cooks want from parsley. Buy: Burpee Full notes
- Dark Green Italian: Cornell's database rates it even higher than Gigante d'Italia at 4.8 stars, another flat-leaf type at 78 days. Buy: True Leaf Market · Burpee Full notes
- Moss Curled: The curly-leaf type most people picture as a garnish, rated 4.4 stars in Cornell's database with compact plants and finely cut leaves. Buy: Botanical Interests · True Leaf Market Full notes
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 · 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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