When to plant Rhubarb in Arizona
In spring, from Mar 1 – Apr 1 in Sierra Vista to May 1 – 20 in Flagstaff.
In fall, from Oct 1 – Nov 1 in Flagstaff to Nov 1 – Dec 1 in Camp Verde.
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 | Not listed | Not listed |
| Avondale | — | Not listed |
| Buckeye | — | Not listed |
| Bullhead City | — | Not listed |
| Camp Verde | Mar 10 – Apr 10 | Nov 1 – Dec 1Soon |
| Casa Grande | Not listed | Not listed |
| Chandler | Not listed | Not listed |
| Chino Valley | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Coolidge | Not listed | Not listed |
| Cottonwood | Not listed | Not listed |
| Douglas | Not listed | Not listed |
| El Mirage | Not listed | Not listed |
| Eloy | Not listed | Not listed |
| Flagstaff | May 1 – 20 | Oct 1 – Nov 1Now |
| Florence | Not listed | Not listed |
| Fountain Hills | — | Not listed |
| Gilbert | Not listed | Not listed |
| Glendale | Not listed | Not listed |
| Goodyear | — | Not listed |
| Kingman | Not listed | Not listed |
| Lake Havasu City | — | Not listed |
| Marana | Not listed | Not listed |
| Maricopa | Not listed | Not listed |
| Mesa | Not listed | Not listed |
| Nogales | Not listed | Not listed |
| Oro Valley | Not listed | Not listed |
| Paradise Valley | — | Not listed |
| Payson | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Peoria | Not listed | Not listed |
| Phoenix | — | Not listed |
| Prescott | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Prescott Valley | Mar 20 – Apr 15 | Oct 15 – Dec 1Now |
| Queen Creek | Not listed | Not listed |
| Safford | Not listed | Not listed |
| Sahuarita | Not listed | Not listed |
| San Luis | — | Not listed |
| Scottsdale | Not listed | Not listed |
| Show Low | Mar 20 – Apr 15 | Oct 15 – Nov 15Now |
| Sierra Vista | Mar 1 – Apr 1 | Not listed |
| Somerton | — | Not listed |
| Surprise | Not listed | Not listed |
| Tempe | Not listed | Not listed |
| Tucson | Not listed | Not listed |
| Yuma | — | Not listed |
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 rhubarb.