State agricultural overview

Arizona crop calendar.

Zone 8bRange 4b to 10b240-day seasonLast frost March 15First frost November 10

13 primary crops with planting windows for Arizona. Calendar timing is anchored to 8b dominant hardiness zone and a 240-day growing season — verify against University of Arizona Cooperative Extension for variety- and county-specific guidance.

Row Crop · Arizona

Corn
primary
Spring: March 15 – April 5
Cotton
primary
Spring: March 29 – April 19
Grain Sorghum
primary
Spring: April 5 – May 3
Soybeans
primary
Spring: March 29 – April 19
Winter Wheat
primary
Fall: November 3 – November 24
Sunflowers
secondary
Spring: March 22 – April 19

Vegetables · Arizona

Cucumbers
primary
Spring: March 29 – May 3
Peppers
primary
Spring: April 5 – April 26
Pumpkins
primary
Spring: April 5 – May 3
Sweet Corn
primary
Spring: March 15 – April 19
Tomatoes
primary
Spring: March 29 – April 19
Potatoes
secondary
Spring: March 1 – March 22
Fall: August 27 – September 11

Forages · Arizona

Clover
primary
Spring: February 23 – March 22
Fall: September 11 – September 26
Alfalfa
secondary
Spring: March 8 – April 5
Fall: September 11 – September 26

Cover Crops · Arizona

Brassicas
primary
Fall: August 27 – September 11
Winter Rye
primary
Fall: November 3 – November 24
Buckwheat
secondary
Spring: May 10 – June 7
Cereal Oats
secondary
Spring: March 8 – April 5
Fall: September 11 – September 26

Frost-date reference — Arizona

Last frost (spring)

March 15

First frost (fall)

November 10

Growing season

240 days

Hardiness zone

Frost dates are NOAA / NCDC climate normals — county-level variation can shift these by 2–4 weeks. The Arizona extension service publishes county-specific frost data: University of Arizona Cooperative Extension.

Arizona soil-temp alerts.

Bield: Farm ties weather and soil-temperature stations in your county to crop planting thresholds — get notified the day soil temp clears the threshold for your target.

Download Bield: Farm

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