When to plant Sweet potatoes in Arizona
In spring, from Feb 15 – May 15 in El Mirage to May 20 – June 10 in Show Low.
In fall, from May 20 – June 10 in Show Low to June 1 – July 1 in Yuma.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Apache Junction | Mar 1 – May 15 | June 1 – July 1 |
| Avondale | — | June 1 – July 1 |
| Buckeye | — | June 1 – July 1 |
| Bullhead City | — | June 1 – July 1 |
| Camp Verde | May 10 – June 10 | June 1 – 15 |
| Casa Grande | Mar 1 – May 15 | June 1 – July 1 |
| Chandler | Mar 1 – May 15 | June 1 – July 1 |
| Chino Valley | May 20 – June 10 | June 1 – 15 |
| Coolidge | Mar 20 – June 1 | June 1 – July 1 |
| Cottonwood | Apr 20 – June 1 | June 1 – July 1 |
| Douglas | Apr 10 – June 1 | June 1 – July 1 |
| El Mirage | Feb 15 – May 15 | June 1 – July 1 |
| Eloy | Mar 20 – June 1 | June 1 – July 1 |
| Flagstaff | Not listed | Not listed |
| Florence | Feb 15 – May 15 | June 1 – July 1 |
| Fountain Hills | — | June 1 – July 1 |
| Gilbert | Feb 15 – May 15 | June 1 – July 1 |
| Glendale | Feb 15 – May 15 | June 1 – July 1 |
| Goodyear | — | June 1 – July 1 |
| Kingman | Apr 20 – June 1 | June 1 – July 1 |
| Lake Havasu City | — | June 1 – July 1 |
| Marana | Apr 20 – June 1 | June 1 – July 1 |
| Maricopa | Mar 20 – June 1 | June 1 – July 1 |
| Mesa | Feb 15 – May 15 | June 1 – July 1 |
| Nogales | Apr 10 – June 1 | June 1 – July 1 |
| Oro Valley | Apr 20 – June 1 | June 1 – July 1 |
| Paradise Valley | — | June 1 – July 1 |
| Payson | May 20 – June 10 | June 1 – 15 |
| Peoria | Mar 1 – May 15 | June 1 – July 1 |
| Phoenix | — | June 1 – July 1 |
| Prescott | May 20 – June 10 | June 1 – 15 |
| Prescott Valley | May 20 – June 10 | June 1 – 15 |
| Queen Creek | Feb 15 – May 15 | June 1 – July 1 |
| Safford | Apr 10 – June 1 | June 1 – July 1 |
| Sahuarita | Mar 20 – June 1 | June 1 – July 1 |
| San Luis | — | June 1 – July 1 |
| Scottsdale | Feb 15 – May 15 | June 1 – July 1 |
| Show Low | May 20 – June 10 | May 20 – June 10 |
| Sierra Vista | May 1 – June 1 | June 1 – July 1 |
| Somerton | — | June 1 – July 1 |
| Surprise | Mar 1 – May 15 | June 1 – July 1 |
| Tempe | Mar 1 – May 15 | June 1 – July 1 |
| Tucson | Mar 1 – May 15 | June 1 – July 1 |
| Yuma | — | June 1 – July 1 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means outside the table. The full USDA table for sweet potatoes.