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When to Plant Radish in Arizona

Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.

Arizona spans USDA hardiness zones 10a, 6b, 7a, 8a, 8b, 9a, 9b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

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Find Your County

Click your county for exact Radish planting dates based on your local frost dates.

Hover over a county to see details. Click to view planting guide.

Radish Planting Calendar for Arizona

Zone 10a ~364 day growing season · Full guide →

Last frost: January 1 · First frost: December 31 · 364 day season

Activity When Date Range
Direct Sow December 11 Dec 11 – Jan 1
Harvest January 8 Jan 8 – Jan 29
Fall Sowing November 5 Nov 5 – Nov 19
Zone 6b ~205 day growing season · Full guide →

Last frost: April 3 · First frost: October 25 · 205 day season

Activity When Date Range
Direct Sow March 20 Mar 20 – Apr 10
Harvest April 17 Apr 17 – May 8
Fall Sowing August 16 Aug 16 – Aug 30
Zone 7a ~221 day growing season · Full guide →

Last frost: March 25 · First frost: November 1 · 221 day season

Activity When Date Range
Direct Sow March 11 Mar 11 – Apr 1
Harvest April 8 Apr 8 – Apr 29
Fall Sowing August 23 Aug 23 – Sep 6
Zone 8a ~255 day growing season · Full guide →

Last frost: March 8 · First frost: November 18 · 255 day season

Activity When Date Range
Direct Sow February 22 Feb 22 – Mar 15
Harvest March 22 Mar 22 – Apr 12
Fall Sowing September 9 Sep 9 – Sep 23
Zone 8b ~276 day growing season · Full guide →

Last frost: February 25 · First frost: November 28 · 276 day season

Activity When Date Range
Direct Sow February 11 Feb 11 – Mar 4
Harvest March 11 Mar 11 – Apr 1
Fall Sowing September 19 Sep 19 – Oct 3
Zone 9a ~303 day growing season · Full guide →

Last frost: February 10 · First frost: December 10 · 303 day season

Activity When Date Range
Direct Sow January 20 Jan 20 – Feb 10
Harvest February 17 Feb 17 – Mar 10
Fall Sowing October 15 Oct 15 – Oct 29
Zone 9b ~329 day growing season · Full guide →

Last frost: January 25 · First frost: December 20 · 329 day season

Activity When Date Range
Direct Sow January 4 Jan 4 – Jan 25
Harvest February 1 Feb 1 – Feb 22
Fall Sowing October 25 Oct 25 – Nov 8

Growing Tips for Arizona

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

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Frequently Asked Questions

When should I plant Radish in Arizona?

Planting dates for Radish in Arizona depend on your USDA zone. Arizona spans zones 10a, 6b, 7a, 8a, 8b, 9a, 9b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Arizona for planting?

Arizona contains USDA hardiness zones 10a, 6b, 7a, 8a, 8b, 9a, 9b. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: May 2026.