When should I plant carrots in ZIP 90012?

In ZIP 90012, the main carrots target is around Dec 30, based on the representative Los Angeles frost station and USDA zone 10b.

When should I start carrots seeds indoors in 90012?

Carrots is usually direct-sown for ZIP 90012. Use the Dec 30 planting window instead of starting it indoors.

Is this a guaranteed planting date?

No. GrowZone uses frost-date estimates, hardiness zones, and crop timing rules for planning. Local microclimates and current weather can shift the right date.

ZIP 90012 planting calendar

When to plant carrots in Los Angeles, CA - Zone 10b

Q: When is the first frost in Los Angeles?

Los Angeles (ZIP 90012) has an average first fall frost around Dec 15, leaving about 329 frost-free days.

In ZIP 90012, plant carrots around Dec 30; this uses the Los Angeles frost station, USDA zone 10b, and carrots timing rules.

Your Los Angeles calendar has a 329-day estimated frost-free season. This estimate uses the representative Los Angeles frost station, USDA zone 10b, and carrots timing rules.

Source: los-angeles-civic-center frost station, USDA zone 10b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

USDA zone 10b Los Angeles frost station University of California Agriculture and Natural Resources Updated 2026-06-28

Read the method

Answer first

When to start carrots seeds indoors in Los Angeles

In ZIP 90012, carrots is usually direct-sown around Dec 30 instead of started indoors.

Carrots is normally direct-sown in Los Angeles. Use around Dec 30 as the outdoor planting window for ZIP 90012.

Seed starting schedule

Carrots dates for Los Angeles, CA

Step	Date	How to use it
Direct Sow	December 30, 2025	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Los Angeles?

Los Angeles (ZIP 90012) has an average last spring frost around Jan 20.

First frost

When is the first frost in Los Angeles?

The average first fall frost is around Dec 15, giving about 329 frost-free days.

Season map

Carrots windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Dec 30

Harvest

Mar 10

Frost watch

Oct 6

Reminder workflow

Every date has a next action

Direct sow carrotsDec 30

Last frost windowJan 20

First carrots harvest windowMar 10

Last carrots sowing targetOct 6

Signal	Value	Why it matters
Last frost estimate	January 20, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	December 15, 2026	Fall planting counts backward from this date.
Season length	329 days	Longer seasons can support succession crops.
Spacing	2-3 in	Airflow and root space affect yield.
Soil temperature	45 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Los Angeles frost history and USDA zone 10b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

University of California Agriculture and Natural Resources is the kind of local source to verify against when a crop is expensive, weather is unusual, or your yard has a cold pocket.

Crop note

Carrots timing notes

Direct sow only; carrots dislike transplanting. Carrots prefers full sun, 2-3 in spacing, and soil near 45 F+.

For fall, count backward from Dec 15. A conservative last sowing target is around Oct 6.