Garlic in Zone 10a & 10b
Allium sativum
When to plant garlic in zone 10b
Zones 10a and 10b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Garlic doesn't transplant well, or doesn't need the extra time indoors.
| Window | Fall window |
|---|---|
| Start indoors | Not typically started indoors |
| Direct sow / transplant outside | Oct–Nov |
| Estimated harvest | May 29 '27–Jul 28 '27 (~240 days after direct-sowing) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
Zone 10b dates sourced from growinginthegarden.com.
Garlic breaks the usual planting pattern entirely: it goes in the ground in fall, sits through winter, and isn't harvested until the following summer, around eight months later. It's the most patience-testing crop in a home garden, and also one of the most hands-off once it's in the ground.
How garlic fits zone 10's season
Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Garlic needs about 240 days from sowing to first harvest.
Good companions
- Tomato: Garlic's sulfur compounds may deter spider mites on tomatoes.
Where to buy garlic seeds
See why we recommend these suppliers →
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews. See the sources cited on each item.
See it growing
Search YouTube for "growing garlic" 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 →
Pin this for later
Growing Garlic in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
Save to Pinterest