When to plant Cauliflower in Arizona
In spring, from Jan 1 – Feb 1 in Apache Junction to May 20 – June 1 in Flagstaff.
In fall, from May 10 – July 15 in Flagstaff to Sept 15 – Nov 1 in Yuma.
Dates are for setting out plants. 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 1 | Sept 1 – Oct 20 |
| Avondale | — | Sept 15 – Nov 1Now |
| Buckeye | — | Sept 15 – Nov 1Now |
| Bullhead City | — | Sept 15 – Nov 1Now |
| Camp Verde | Mar 15 – Apr 20 | July 15 – Aug 15 |
| Casa Grande | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Chandler | Jan 1 – Feb 1 | Aug 15 – Oct 10 |
| Chino Valley | Apr 10 – May 10 | July 1 – Aug 5 |
| Coolidge | Jan 10 – Feb 10 | Aug 15 – Oct 10 |
| Cottonwood | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Douglas | Feb 10 – Mar 10 | Aug 1 – Sept 1 |
| El Mirage | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Eloy | Jan 20 – Feb 20 | Aug 15 – Oct 10 |
| Flagstaff | May 20 – June 1 | May 10 – July 15 |
| Florence | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Fountain Hills | — | Sept 15 – Nov 1Now |
| Gilbert | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Glendale | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Goodyear | — | Sept 15 – Nov 1Now |
| Kingman | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Lake Havasu City | — | Sept 15 – Nov 1Now |
| Marana | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Maricopa | Jan 10 – Feb 10 | Aug 1 – Sept 15 |
| Mesa | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Nogales | Feb 10 – Mar 10 | Aug 1 – Sept 15 |
| Oro Valley | Feb 20 – Mar 20 | Aug 1 – Sept 1 |
| Paradise Valley | — | Sept 15 – Nov 1Now |
| Payson | Apr 10 – May 10 | July 1 – Aug 5 |
| Peoria | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Phoenix | — | Sept 15 – Nov 1Now |
| Prescott | Apr 10 – May 10 | July 1 – Aug 5 |
| Prescott Valley | Apr 10 – May 10 | July 1 – Aug 5 |
| Queen Creek | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Safford | Feb 10 – Mar 10 | Aug 1 – Sept 1 |
| Sahuarita | Jan 20 – Feb 20 | Aug 15 – Oct 10 |
| San Luis | — | Sept 15 – Nov 1Now |
| Scottsdale | Jan 1 – Feb 1 | Sept 15 – Nov 1Now |
| Show Low | Apr 10 – May 10 | June 1 – July 25 |
| Sierra Vista | Mar 1 – 20 | Aug 1 – Sept 1 |
| Somerton | — | Sept 15 – Nov 1Now |
| Surprise | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Tempe | Jan 1 – Feb 1 | Aug 15 – Oct 10 |
| Tucson | Jan 1 – Feb 1 | Sept 1 – Oct 20 |
| Yuma | — | Sept 15 – Nov 1Now |
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 cauliflower.