When should I plant carrots in ZIP 77002?

In ZIP 77002, the main carrots target is around Jan 30, based on the representative Houston frost station and USDA zone 9b.

When should I start carrots seeds indoors in 77002?

Carrots is usually direct-sown for ZIP 77002. Use the Jan 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 77002 planting calendar

When to plant carrots in Houston, TX - Zone 9b

Q: When is the first frost in Houston?

Houston (ZIP 77002) has an average first fall frost around Dec 5, leaving about 288 frost-free days.

In ZIP 77002, plant carrots around Jan 30; this uses the Houston frost station, USDA zone 9b, and carrots timing rules.

Your Houston calendar has a 288-day estimated frost-free season. This estimate uses the representative Houston frost station, USDA zone 9b, and carrots timing rules.

Source: houston-hobby frost station, USDA zone 9b, 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 9b Houston frost station Texas A&M AgriLife Extension Updated 2026-06-28

Read the method

Answer first

When to start carrots seeds indoors in Houston

In ZIP 77002, carrots is usually direct-sown around Jan 30 instead of started indoors.

Carrots is normally direct-sown in Houston. Use around Jan 30 as the outdoor planting window for ZIP 77002.

Seed starting schedule

Carrots dates for Houston, TX

Step	Date	How to use it
Direct Sow	January 30, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Houston?

Houston (ZIP 77002) has an average last spring frost around Feb 20.

First frost

When is the first frost in Houston?

The average first fall frost is around Dec 5, giving about 288 frost-free days.

Season map

Carrots windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Jan 30

Harvest

Apr 10

Frost watch

Sep 26

Reminder workflow

Every date has a next action

Direct sow carrotsJan 30

Last frost windowFeb 20

First carrots harvest windowApr 10

Last carrots sowing targetSep 26

Signal	Value	Why it matters
Last frost estimate	February 20, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	December 5, 2026	Fall planting counts backward from this date.
Season length	288 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

Houston frost history and USDA zone 9b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

Texas A&M AgriLife Extension 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 5. A conservative last sowing target is around Sep 26.