When should I plant radishes in ZIP 70112?

In ZIP 70112, the main radishes target is around Jan 13, based on the representative New Orleans frost station and USDA zone 9b.

When should I start radishes seeds indoors in 70112?

Radishes is usually direct-sown for ZIP 70112. Use the Jan 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 70112 planting calendar

When to plant radishes in New Orleans, LA - Zone 9b

Q: When is the first frost in New Orleans?

New Orleans (ZIP 70112) has an average first fall frost around Dec 10, leaving about 303 frost-free days.

In ZIP 70112, plant radishes around Jan 13; this uses the New Orleans frost station, USDA zone 9b, and radishes timing rules.

Your New Orleans calendar has a 303-day estimated frost-free season. This estimate uses the representative New Orleans frost station, USDA zone 9b, and radishes timing rules.

Source: new-orleans-lakefront 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 New Orleans frost station LSU AgCenter Updated 2026-06-28

Read the method

Answer first

When to start radishes seeds indoors in New Orleans

In ZIP 70112, radishes is usually direct-sown around Jan 13 instead of started indoors.

Radishes is normally direct-sown in New Orleans. Use around Jan 13 as the outdoor planting window for ZIP 70112.

Seed starting schedule

Radishes dates for New Orleans, LA

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

Last frost

When is the last frost in New Orleans?

New Orleans (ZIP 70112) has an average last spring frost around Feb 10.

First frost

When is the first frost in New Orleans?

The average first fall frost is around Dec 10, giving about 303 frost-free days.

Season map

Radishes windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Jan 13

Harvest

Feb 10

Frost watch

Nov 12

Reminder workflow

Every date has a next action

Direct sow radishesJan 13

Last frost windowFeb 10

First radishes harvest windowFeb 10

Last radishes sowing targetNov 12

Signal	Value	Why it matters
Last frost estimate	February 10, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	December 10, 2026	Fall planting counts backward from this date.
Season length	303 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

New Orleans frost history and USDA zone 9b shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

LSU AgCenter 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 Dec 10. A conservative last sowing target is around Nov 12.