Plant Carrots in Zone 12b
Seed-starting, transplant & harvest dates for USDA Zone 12b
Zone 12b is effectively frost-free, so the Zone 12b calendar for carrots 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 carrots will finish but whether it will sit through the hottest stretch of the year. Carrots is a hardy crop needing about 70 days from sowing to harvest.
Planting carrots for a fall harvest in Zone 12b
Zone 12b has no meaningful frost, so the fall and winter months are the easiest time of year to grow carrots here. Sow from about October 1 onward.
Carrots convert starch to sugar in cold soil, so fall carrots taste noticeably sweeter. Under a straw mulch they hold in the ground well past the first hard freeze.
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 carrots in Zone 12b
| Planting | Sow or start | In the ground | Harvest |
|---|---|---|---|
| Spring | Feb 1 | Feb 1 | Apr 12 |
| Fall | Oct onward | Oct onward | Winter |
Carrots in nearby zones
Further reading on carrots
- Can you plant carrots in September?
The September cutoff for a fall carrot crop, zone by zone.
- Cold frame gardening by zone
How a cold frame keeps carrots producing into winter, and when to sow it.
- Last frost date and what to plant before it
Why carrots can go out before your last frost, and how far before.
Other crops in Zone 12b
Frequently asked questions
When should I start carrots in Zone 12b?
Direct sow outdoors around Feb 1.
Can I direct sow carrots in Zone 12b?
Yes, direct sow around Feb 1.
Can I plant carrots in the fall in Zone 12b?
Zone 12b has no meaningful frost, so the fall and winter months are the easiest time of year to grow carrots here. Sow from about October 1 onward.
Will carrots survive frost in Zone 12b?
Carrots is a hardy crop and keeps going roughly 28 days past the first light frost in Zone 12b. A row cover or a straw mulch buys more.