When to plant Sweet potatoes in Colorado
In spring, from May 1 – June 1 in Grand Junction to May 20 – June 10 in Windsor.
In fall, from May 20 – June 10 in Aurora to June 1 – 15 in Grand Junction.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Arvada | May 20 – June 10 | Not listed |
| Aurora | Not listed | May 20 – June 10 |
| Berthoud | Not listed | Not listed |
| Boulder | Not listed | Not listed |
| Brighton | May 20 – June 10 | May 20 – June 10 |
| Broomfield | May 20 – June 10 | May 20 – June 10 |
| Cañon City | May 20 – June 10 | May 20 – June 10 |
| Castle Pines | Not listed | Not listed |
| Castle Rock | Not listed | Not listed |
| Centennial | May 20 – June 10 | May 20 – June 10 |
| Colorado Springs | May 20 – June 10 | May 20 – June 10 |
| Commerce City | May 20 – June 10 | May 20 – June 10 |
| Denver | May 20 – June 10 | May 20 – June 10 |
| Durango | Not listed | Not listed |
| Englewood | May 20 – June 10 | May 20 – June 10 |
| Erie | Not listed | Not listed |
| Evans | May 20 – June 10 | May 20 – June 10 |
| Federal Heights | May 20 – June 10 | May 20 – June 10 |
| Firestone | Not listed | Not listed |
| Fort Collins | May 20 – June 10 | May 20 – June 10 |
| Fort Morgan | Not listed | May 20 – June 10 |
| Fountain | May 20 – June 10 | May 20 – June 10 |
| Frederick | Not listed | Not listed |
| Fruita | May 20 – June 10 | May 20 – June 10 |
| Glenwood Springs | Not listed | Not listed |
| Golden | May 20 – June 10 | May 20 – June 10 |
| Grand Junction | May 1 – June 1 | June 1 – 15 |
| Greeley | May 20 – June 10 | May 20 – June 10 |
| Greenwood Village | Not listed | May 20 – June 10 |
| Johnstown | Not listed | Not listed |
| Lafayette | May 20 – June 10 | May 20 – June 10 |
| Lakewood | May 20 – June 10 | May 20 – June 10 |
| Littleton | May 20 – June 10 | May 20 – June 10 |
| Lone Tree | May 20 – June 10 | May 20 – June 10 |
| Longmont | Not listed | Not listed |
| Louisville | Not listed | Not listed |
| Loveland | Not listed | Not listed |
| Montrose | May 20 – June 10 | May 20 – June 10 |
| Monument | Not listed | Not listed |
| Northglenn | May 20 – June 10 | May 20 – June 10 |
| Parker | Not listed | Not listed |
| Pueblo | May 20 – June 10 | May 20 – June 10 |
| Rifle | Not listed | Not listed |
| Severance | May 20 – June 10 | May 20 – June 10 |
| Steamboat Springs | Not listed | Not listed |
| Sterling | May 20 – June 10 | May 20 – June 10 |
| Superior | Not listed | Not listed |
| Thornton | May 20 – June 10 | May 20 – June 10 |
| Timnath | May 20 – June 10 | May 20 – June 10 |
| Wellington | May 20 – June 10 | May 20 – June 10 |
| Westminster | May 20 – June 10 | May 20 – June 10 |
| Wheat Ridge | May 20 – June 10 | Not listed |
| Windsor | May 20 – June 10 | May 20 – June 10 |
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 sweet potatoes.