Plant Basil in Zone 12b
Seed-starting, transplant & harvest dates for USDA Zone 12b
Zone 12b is effectively frost-free, so the Zone 12b calendar for basil is set by heat, not cold. There is no last frost to count backward from and no first frost to beat, which means the question is not whether basil will finish but whether it will sit through the hottest stretch of the year. Basil is a tender crop needing about 60 days from sowing to harvest.
Fall planting: basil in Zone 12b
Basil has no useful fall window in Zone 12b. Basil blackens at the first light frost, so there is no fall window. Move a plant indoors under a light instead.
Basil blackens at the first light frost, so there is no fall window. Move a plant indoors under a light instead.
Fall dates are counted backward from the Zone 12b average first frost, not forward from a sowing date. See the fall planting calendar by zone for the full method.
Spring vs fall basil in Zone 12b
| Planting | Sow or start | In the ground | Harvest |
|---|---|---|---|
| Spring | Feb 1 | Feb 1 | Apr 2 |
| Fall | — | — | — |
Basil in nearby zones
Further reading on basil
- When to start seeds indoors by zone
Indoor start dates for basil, counted back from your last frost.
- Hardening off seedlings: a schedule
A day by day plan for moving basil seedlings outdoors.
- Best grow lights for seed starting
What light seedlings actually need, and which fixtures deliver it.
Other crops in Zone 12b
Frequently asked questions
When should I start basil in Zone 12b?
Direct sow outdoors around Feb 1.
Can I direct sow basil in Zone 12b?
Yes, direct sow around Feb 1.
Can I plant basil in the fall in Zone 12b?
Basil has no useful fall window in Zone 12b. Basil blackens at the first light frost, so there is no fall window. Move a plant indoors under a light instead.
Will basil survive frost in Zone 12b?
No. Basil is a tender crop and a single light frost ends it, so every Zone 12b planting has to finish before the average first frost (Zone 12b rarely sees one).