When should I plant carrots in ZIP 53202?

In ZIP 53202, the main carrots target is around Apr 19, based on the representative Milwaukee frost station and USDA zone 6a.

When should I start carrots seeds indoors in 53202?

Carrots is usually direct-sown for ZIP 53202. Use the Apr 19 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 53202 planting calendar

When to plant carrots in Milwaukee, WI - Zone 6a

Q: When is the first frost in Milwaukee?

Milwaukee (ZIP 53202) has an average first fall frost around Oct 10, leaving about 153 frost-free days.

In ZIP 53202, plant carrots around Apr 19; this uses the Milwaukee frost station, USDA zone 6a, and carrots timing rules.

Your Milwaukee calendar has a 153-day estimated frost-free season. This estimate uses the representative Milwaukee frost station, USDA zone 6a, and carrots timing rules.

Source: milwaukee-mitchell frost station, USDA zone 6a, 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 6a Milwaukee frost station University of Wisconsin Extension Updated 2026-06-28

Read the method

Answer first

When to start carrots seeds indoors in Milwaukee

In ZIP 53202, carrots is usually direct-sown around Apr 19 instead of started indoors.

Carrots is normally direct-sown in Milwaukee. Use around Apr 19 as the outdoor planting window for ZIP 53202.

Seed starting schedule

Carrots dates for Milwaukee, WI

Step	Date	How to use it
Direct Sow	April 19, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Milwaukee?

Milwaukee (ZIP 53202) has an average last spring frost around May 10.

First frost

When is the first frost in Milwaukee?

The average first fall frost is around Oct 10, giving about 153 frost-free days.

Season map

Carrots windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Apr 19

Harvest

Jun 28

Frost watch

Aug 1

Reminder workflow

Every date has a next action

Direct sow carrotsApr 19

Last frost windowMay 10

First carrots harvest windowJun 28

Last carrots sowing targetAug 1

Signal	Value	Why it matters
Last frost estimate	May 10, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	October 10, 2026	Fall planting counts backward from this date.
Season length	153 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

Milwaukee frost history and USDA zone 6a shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

University of Wisconsin 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 Oct 10. A conservative last sowing target is around Aug 1.