When to plant Spinach in Arizona
In spring, from Jan 1 – Feb 15 in Apache Junction to Apr 20 – June 15 in Flagstaff.
In fall, from July 1 – Aug 15 in Flagstaff to Oct 1 – Dec 31 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 | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Avondale | — | Oct 1 – Dec 31Now |
| Buckeye | — | Oct 1 – Dec 31Now |
| Bullhead City | — | Oct 1 – Dec 31Now |
| Camp Verde | Mar 1 – Apr 15 | Sept 1 – Oct 1 |
| Casa Grande | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Chandler | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Chino Valley | Mar 20 – Apr 20 | Aug 20 – Sept 10 |
| Coolidge | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Cottonwood | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Douglas | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
| El Mirage | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Eloy | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| Flagstaff | Apr 20 – June 15 | July 1 – Aug 15 |
| Florence | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Fountain Hills | — | Oct 1 – Dec 31Now |
| Gilbert | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Glendale | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Goodyear | — | Oct 1 – Dec 31Now |
| Kingman | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Lake Havasu City | — | Oct 1 – Dec 31Now |
| Marana | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Maricopa | Jan 1 – Mar 1 | Oct 1 – Dec 1Now |
| Mesa | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Nogales | Jan 15 – Mar 15 | Oct 1 – Dec 1Now |
| Oro Valley | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Paradise Valley | — | Oct 1 – Dec 31Now |
| Payson | Mar 20 – Apr 20 | Aug 20 – Sept 10 |
| Peoria | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Phoenix | — | Oct 1 – Dec 31Now |
| Prescott | Mar 20 – Apr 20 | Aug 20 – Sept 10 |
| Prescott Valley | Mar 20 – Apr 20 | Aug 20 – Sept 10 |
| Queen Creek | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Safford | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
| Sahuarita | Jan 1 – Mar 1 | Oct 1 – Dec 31Now |
| San Luis | — | Oct 1 – Dec 31Now |
| Scottsdale | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Show Low | Mar 20 – Apr 20 | Aug 1 – Sept 1 |
| Sierra Vista | Feb 15 – Apr 1 | Sept 15 – Nov 1Now |
| Somerton | — | Oct 1 – Dec 31Now |
| Surprise | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Tempe | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Tucson | Jan 1 – Feb 15 | Oct 1 – Dec 31Now |
| Yuma | — | Oct 1 – Dec 31Now |
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 spinach.