When should I plant radishes in ZIP 68102?

In ZIP 68102, the main radishes target is around Apr 7, based on the representative Omaha frost station and USDA zone 6a.

When should I start radishes seeds indoors in 68102?

Radishes is usually direct-sown for ZIP 68102. Use the Apr 7 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 68102 planting calendar

When to plant radishes in Omaha, NE - Zone 6a

Q: When is the first frost in Omaha?

Omaha (ZIP 68102) has an average first fall frost around Oct 10, leaving about 158 frost-free days.

In ZIP 68102, plant radishes around Apr 7; this uses the Omaha frost station, USDA zone 6a, and radishes timing rules.

Your Omaha calendar has a 158-day estimated frost-free season. This estimate uses the representative Omaha frost station, USDA zone 6a, and radishes timing rules.

Source: omaha-eppley 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 Omaha frost station Nebraska Extension Updated 2026-06-28

Read the method

Answer first

When to start radishes seeds indoors in Omaha

In ZIP 68102, radishes is usually direct-sown around Apr 7 instead of started indoors.

Radishes is normally direct-sown in Omaha. Use around Apr 7 as the outdoor planting window for ZIP 68102.

Seed starting schedule

Radishes dates for Omaha, NE

Step	Date	How to use it
Direct Sow	April 7, 2026	Sow seed outside when the crop and soil can handle the window.

Last frost

When is the last frost in Omaha?

Omaha (ZIP 68102) has an average last spring frost around May 5.

First frost

When is the first frost in Omaha?

The average first fall frost is around Oct 10, giving about 158 frost-free days.

Season map

Radishes windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Apr 7

Harvest

May 5

Frost watch

Sep 12

Reminder workflow

Every date has a next action

Direct sow radishesApr 7

Last frost windowMay 5

First radishes harvest windowMay 5

Last radishes sowing targetSep 12

Signal	Value	Why it matters
Last frost estimate	May 5, 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	158 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.

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

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

Nebraska 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 Oct 10. A conservative last sowing target is around Sep 12.