Dill in Zone 10a & 10b
Anethum graveolens
When to plant dill 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, Dill needs a head start on the heat that direct-sowing elsewhere doesn't require.
| Window | Fall window |
|---|---|
| Start indoors | Aug–Nov |
| Direct sow / transplant outside | Oct–Jan |
| Estimated harvest | Nov 25–Mar 27 '27 (~55 days after transplanting) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Zone 10b dates sourced from growinginthegarden.com.
Dill is an easy, low-maintenance herb that mostly takes care of itself once it's in the ground, the main thing to get right is where you plant it, since mature dill doesn't get along with one of the garden's most common root crops.
How dill fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Dill needs about 55 days from sowing to first harvest.
Good companions
- Cabbage: Attracts beneficial predatory insects that protect brassicas.
Where to buy dill seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing dill" 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 Dill in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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