When to plant Winter squash in Arizona
In fall, from June 1 – July 1 in Chino Valley to Aug 1 – Sept 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 | — | Aug 1 – Sept 1 |
| Avondale | — | Aug 1 – Sept 1 |
| Buckeye | — | Aug 1 – Sept 1 |
| Bullhead City | — | Aug 1 – Sept 1 |
| Camp Verde | — | June 10 – July 10 |
| Casa Grande | — | Aug 1 – Sept 1 |
| Chandler | — | July 15 – Aug 15 |
| Chino Valley | — | June 1 – July 1 |
| Coolidge | — | July 15 – Aug 15 |
| Cottonwood | — | June 20 – July 20 |
| Douglas | — | June 20 – July 20 |
| El Mirage | — | Aug 1 – Sept 1 |
| Eloy | — | July 15 – Aug 15 |
| Flagstaff | — | June 1 – 15 |
| Florence | — | Aug 1 – Sept 1 |
| Fountain Hills | — | Aug 1 – Sept 1 |
| Gilbert | — | Aug 1 – Sept 1 |
| Glendale | — | Aug 1 – Sept 1 |
| Goodyear | — | Aug 1 – Sept 1 |
| Kingman | — | June 20 – July 20 |
| Lake Havasu City | — | Aug 1 – Sept 1 |
| Marana | — | June 20 – July 20 |
| Maricopa | — | July 1 – Aug 1 |
| Mesa | — | Aug 1 – Sept 1 |
| Nogales | — | July 1 – Aug 1 |
| Oro Valley | — | June 20 – July 20 |
| Paradise Valley | — | Aug 1 – Sept 1 |
| Payson | — | June 1 – July 1 |
| Peoria | — | Aug 1 – Sept 1 |
| Phoenix | — | Aug 1 – Sept 1 |
| Prescott | — | June 1 – July 1 |
| Prescott Valley | — | June 1 – July 1 |
| Queen Creek | — | Aug 1 – Sept 1 |
| Safford | — | June 20 – July 20 |
| Sahuarita | — | July 15 – Aug 15 |
| San Luis | — | Aug 1 – Sept 1 |
| Scottsdale | — | Aug 1 – Sept 1 |
| Show Low | — | June 1 – July 1 |
| Sierra Vista | — | June 20 – July 20 |
| Somerton | — | Aug 1 – Sept 1 |
| Surprise | — | Aug 1 – Sept 1 |
| Tempe | — | July 15 – Aug 15 |
| Tucson | — | Aug 1 – Sept 1 |
| Yuma | — | Aug 1 – Sept 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 the place's frost date is outside the table. The full USDA table for winter squash.