Root Vegetable

When to Plant Carrots in Arizona

Patience is the secret ingredient. Carrots are slow to germinate but deliver sweet, crunchy rewards.

The Short Answer

In Arizona, soil conditions are an important factor for carrots. Alkaline, mineral-rich desert soils. Low organic matter. Heavy amendment with compost essential. Caliche layers may need to be broken. Direct sow 3 weeks before your last frost date. Carrots can also be planted in fall, 10 weeks before your first frost.

Arizona Frost Dates

Your planting dates depend on which part of Arizona you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Arizona (Flagstaff) 4b, 5a, 5b, 6a May 15 - Jun 5 Sep 15 - Oct 10
Central Arizona (Phoenix) 9a, 9b, 10a Jan 15 - Feb 10 Dec 1 - Dec 20
Southern Arizona (Tucson) 8b, 9a, 9b Feb 1 - Feb 25 Nov 20 - Dec 15

Carrots Planting Schedule for Arizona

Northern Arizona (Flagstaff) (Zones 4b, 5a, 5b, 6a)

Average last frost: May 15 - Jun 5 · Average first frost: Sep 15 - Oct 10

Direct Sow
3 wks before frost
Fall Planting
10 wks before first frost

Central Arizona (Phoenix) (Zones 9a, 9b, 10a)

Average last frost: Jan 15 - Feb 10 · Average first frost: Dec 1 - Dec 20

Direct Sow
3 wks before frost
Fall Planting
10 wks before first frost

Southern Arizona (Tucson) (Zones 8b, 9a, 9b)

Average last frost: Feb 1 - Feb 25 · Average first frost: Nov 20 - Dec 15

Direct Sow
3 wks before frost
Fall Planting
10 wks before first frost

Growing Carrots in Arizona

Carrots in Arizona's Climate

Grow carrots from October through January only. The window is short — hot soil temperatures produce bitter, tough roots. Sandy soils in Florida and the desert Southwest provide good drainage but need compost for nutrients. Choose quick-maturing varieties like Nantes (65 days) to maximize your narrow cool window.

Soil Considerations for Arizona

Alkaline, mineral-rich desert soils. Low organic matter. Heavy amendment with compost essential. Caliche layers may need to be broken. Loose, well-drained soil is especially important for carrots since the edible portion grows underground. If your soil is heavy clay, consider raised beds.

Arizona Climate & Growing Season

Extreme heat in summer lowlands. Two planting seasons in Phoenix — spring and fall (summer is too hot). High elevation has traditional cold-climate seasons.

Growing season length varies across Arizona: Northern Arizona (Flagstaff) (4b, 5a, 5b, 6a) has a last frost around May 15 - Jun 5, while Southern Arizona (Tucson) (8b, 9a, 9b) sees frost end around Feb 1 - Feb 25. This difference matters for carrots — adjust your planting dates to match your specific region.

Growing Tips

Loose, sandy soil is ideal. Rocky or clay soil causes forked roots. Keep soil consistently moist until seeds germinate.

Companion Planting

Plant carrots alongside these companions for better growth:

Peas Lettuce Tomatoes Onions

Keep carrots away from:

Dill

The Bottom Line

Carrots can be grown successfully across Arizona, but your exact planting dates depend on which region you're in. Northern Arizona (Flagstaff) gardeners should plan around a May 15 - Jun 5 last frost, while those in Southern Arizona (Tucson) can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Carrots Growing Guide National planting guide with all states Arizona Planting Calendar All plants for Arizona Carrots in Alabama Alabama planting dates Carrots in Alaska Alaska planting dates Carrots in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

Ready to Start Planting?

Enter your zip code and pick your plant. We'll tell you exactly when to plant, start seeds, and harvest — based on where you live.

Find Your Planting Dates