When should I plant radishes in ZIP 85001?

In ZIP 85001, the main radishes target is around Jan 8, based on the representative Phoenix frost station and USDA zone 10a.

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 85001 planting calendar

In ZIP 85001, plant radishes around Jan 8.

Your Phoenix calendar has a 313-day estimated frost-free season. This estimate uses the representative Phoenix frost station, USDA zone 10a, and radishes timing rules.

USDA zone 10a Phoenix frost station University of Arizona Extension Updated 2026-06-28

Read the method

Season map

Radishes windows by month

JanFebMarAprMayJunJulAugSepOctNovDec

Direct sow

Jan 8

Harvest

Feb 5

Frost watch

Nov 17

Reminder workflow

Every date has a next action

Direct sow radishesJan 8

Last frost windowFeb 5

First radishes harvest windowFeb 5

Last radishes sowing targetNov 17

Signal	Value	Why it matters
Last frost estimate	February 5, 2026	Warm-season transplant risk starts falling after this window.
First frost estimate	December 15, 2026	Fall planting counts backward from this date.
Season length	313 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

Phoenix frost history and USDA zone 10a shift the safe planting window. GrowZone uses a local representative station instead of one national rule.

University of Arizona 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 Dec 15. A conservative last sowing target is around Nov 17.