When should I plant radishes in ZIP 27601?

In ZIP 27601, the main radishes target is around Mar 13, based on the representative Raleigh frost station and USDA zone 8a.

When should I start radishes seeds indoors in 27601?

Radishes is usually direct-sown for ZIP 27601. Use the Mar 13 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 27601 planting calendar

When to plant radishes in Raleigh, NC - Zone 8a

Q: When is the first frost in Raleigh?

Raleigh (ZIP 27601) has an average first fall frost around Nov 1, leaving about 205 frost-free days.

In ZIP 27601, plant radishes around Mar 13; this uses the Raleigh frost station, USDA zone 8a, and radishes timing rules.

Your Raleigh calendar has a 205-day estimated frost-free season. This estimate uses the representative Raleigh frost station, USDA zone 8a, and radishes timing rules.

Source: raleigh-durham frost station, USDA zone 8a, 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 8a Raleigh frost station NC State Extension Updated 2026-06-28

Read the method

Answer first

When to start radishes seeds indoors in Raleigh

In ZIP 27601, radishes is usually direct-sown around Mar 13 instead of started indoors.

Radishes is normally direct-sown in Raleigh. Use around Mar 13 as the outdoor planting window for ZIP 27601.

Seed starting schedule

Radishes dates for Raleigh, NC

Step	Date	How to use it
Direct Sow	March 13, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Raleigh?

Raleigh (ZIP 27601) has an average last spring frost around Apr 10.

First frost

When is the first frost in Raleigh?

The average first fall frost is around Nov 1, giving about 205 frost-free days.

Season map

Radishes windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Mar 13

Harvest

Apr 10

Frost watch

Oct 4

Reminder workflow

Every date has a next action

Direct sow radishesMar 13

Last frost windowApr 10

First radishes harvest windowApr 10

Last radishes sowing targetOct 4

Signal	Value	Why it matters
Last frost estimate	April 10, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 1, 2026	Fall planting counts backward from this date.
Season length	205 days	Longer seasons can support succession crops.
Spacing	1-2 in	Airflow and root space affect yield.
Soil temperature	40 F+	Seeds and transplants stall in cold soil.

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Local data

Why this date changes by ZIP

Raleigh frost history and USDA zone 8a shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

NC State 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

Radishes timing notes

Fast crop; harvest promptly before roots get woody. Radishes prefers full sun, 1-2 in spacing, and soil near 40 F+.

For fall, count backward from Nov 1. A conservative last sowing target is around Oct 4.