When to plant sweet potato in Utah
Utah spans USDA zones 5b–8b, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 4 in St. George to June 25 in Heber — below are local dates for 67 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Salt Lake City | 7b | March 31 | November 8 | April 21 – May 5 |
| West Valley City | 7b | April 8 | October 31 | April 29 – May 13 |
| West Jordan | 7b | April 18 | October 22 | May 9 – May 23 |
| Provo | 7a | April 18 | October 21 | May 9 – May 23 |
| St. George | 8b | March 14 | November 10 | April 4 – April 18 |
| Orem | 7a | April 19 | October 19 | May 10 – May 24 |
| Sandy | 7b | April 29 | October 22 | May 20 – June 3 |
| Ogden | 6b | April 21 | October 23 | May 12 – May 26 |
Sweet Potato in Utah: FAQ
When can I plant sweet potato in Utah?
Across Utah, the time to transplant sweet potato spans roughly April 4 in St. George to June 25 in Heber, each following that city's local frost dates.
Does the sweet potato planting date vary across Utah?
Yes. Utah publishes 67 cities with their own frost dates, so the right sweet potato planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does sweet potato take to grow in Utah?
Sweet Potato takes about 90–120 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
Never miss a window in your area
An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.