When should I plant radishes in ZIP 10001?

In ZIP 10001, the main radishes target is around Mar 11, based on the representative New York frost station and USDA zone 7b.

When should I start radishes seeds indoors in 10001?

Radishes is usually direct-sown for ZIP 10001. Use the Mar 11 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 10001 planting calendar

When to plant radishes in New York, NY - Zone 7b

Q: When is the first frost in New York?

New York (ZIP 10001) has an average first fall frost around Nov 5, leaving about 211 frost-free days.

In ZIP 10001, plant radishes around Mar 11; this uses the New York frost station, USDA zone 7b, and radishes timing rules.

Your New York calendar has a 211-day estimated frost-free season. This estimate uses the representative New York frost station, USDA zone 7b, and radishes timing rules.

Source: new-york-central-park frost station, USDA zone 7b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

Reviewed by GrowZone Editorial. Calculated from the new-york-central-park frost station and USDA zone 7b, last updated 2026-06-28.

In the New York area, radishes timing follows the New York frost window, so the local ZIP date can differ from a broad zone-only calendar.

USDA zone 7b New York frost station Cornell Cooperative Extension Updated 2026-06-28

Read the method

Answer first

When to start radishes seeds indoors in New York

In ZIP 10001, radishes is usually direct-sown around Mar 11 instead of started indoors.

Radishes is normally direct-sown in New York. Use around Mar 11 as the outdoor planting window for ZIP 10001.

Seed starting schedule

Radishes dates for New York, NY

Step	Date	How to use it
Direct Sow	March 11, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in New York?

New York (ZIP 10001) has an average last spring frost around Apr 8.

First frost

When is the first frost in New York?

The average first fall frost is around Nov 5, giving about 211 frost-free days.

Season map

Radishes windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Mar 11

Harvest

Apr 8

Frost watch

Oct 8

Reminder workflow

Every date has a next action

Direct sow radishesMar 11

Last frost windowApr 8

First radishes harvest windowApr 8

Last radishes sowing targetOct 8

Signal	Value	Why it matters
Last frost estimate	April 8, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	November 5, 2026	Fall planting counts backward from this date.
Season length	211 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

New York frost history and USDA zone 7b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

Cornell Cooperative 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 5. A conservative last sowing target is around Oct 8.