When should I plant cilantro in ZIP 93721?

In ZIP 93721, the main cilantro target is around Feb 6, based on the representative Fresno frost station and USDA zone 9b.

When should I start cilantro seeds indoors in 93721?

Cilantro is usually direct-sown for ZIP 93721. Use the Feb 6 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 93721 planting calendar

When to plant cilantro in Fresno, CA - Zone 9b

Q: When is the first frost in Fresno?

Fresno (ZIP 93721) has an average first fall frost around Nov 25, leaving about 278 frost-free days.

In ZIP 93721, plant cilantro around Feb 6; this uses the Fresno frost station, USDA zone 9b, and cilantro timing rules.

Your Fresno calendar has a 278-day estimated frost-free season. This estimate uses the representative Fresno frost station, USDA zone 9b, and cilantro timing rules.

Source: fresno-yosemite 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 Fresno frost station University of California Agriculture and Natural Resources Updated 2026-06-28

Read the method

Answer first

When to start cilantro seeds indoors in Fresno

In ZIP 93721, cilantro is usually direct-sown around Feb 6 instead of started indoors.

Cilantro is normally direct-sown in Fresno. Use around Feb 6 as the outdoor planting window for ZIP 93721.

Seed starting schedule

Cilantro dates for Fresno, CA

Step	Date	How to use it
Direct Sow	February 6, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Fresno?

Fresno (ZIP 93721) has an average last spring frost around Feb 20.

First frost

When is the first frost in Fresno?

The average first fall frost is around Nov 25, giving about 278 frost-free days.

Season map

Cilantro windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Feb 6

Harvest

Mar 23

Frost watch

Oct 11

Reminder workflow

Every date has a next action

Direct sow cilantroFeb 6

Last frost windowFeb 20

First cilantro harvest windowMar 23

Last cilantro sowing targetOct 11

Signal	Value	Why it matters
Last frost estimate	February 20, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 25, 2026	Fall planting counts backward from this date.
Season length	278 days	Longer seasons can support succession crops.
Spacing	4-6 in	Airflow and root space affect yield.
Soil temperature	45 F+	Seeds and transplants stall in cold soil.

GrowZone may earn from qualifying seed or supply links when real affiliate IDs are configured. No monetized links are active without disclosure.

Local data

Why this date changes by ZIP

Fresno frost history and USDA zone 9b 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

Cilantro timing notes

Sow small batches often because cilantro bolts in heat. Cilantro prefers sun to part shade, 4-6 in spacing, and soil near 45 F+.

For fall, count backward from Nov 25. A conservative last sowing target is around Oct 11.