When to plant winter squash in Utah
Utah spans USDA zones 5b–8b, so the right time to plant winter squash shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 21 in St. George to June 11 in Heber — below are local dates for 67 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Salt Lake City | 7b | March 31 | November 8 | April 7 – April 21 |
| West Valley City | 7b | April 8 | October 31 | April 15 – April 29 |
| West Jordan | 7b | April 18 | October 22 | April 25 – May 9 |
| Provo | 7a | April 18 | October 21 | April 25 – May 9 |
| St. George | 8b | March 14 | November 10 | March 21 – April 4 |
| Orem | 7a | April 19 | October 19 | April 26 – May 10 |
| Sandy | 7b | April 29 | October 22 | May 6 – May 20 |
| Ogden | 6b | April 21 | October 23 | April 28 – May 12 |
Winter Squash in Utah: FAQ
When can I plant winter squash in Utah?
Across Utah, the time to direct-sow winter squash spans roughly March 21 in St. George to June 11 in Heber, each following that city's local frost dates.
Does the winter squash planting date vary across Utah?
Yes. Utah publishes 67 cities with their own frost dates, so the right winter squash 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 winter squash take to grow in Utah?
Winter Squash takes about 85–110 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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