When to plant acorn squash in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant acorn squash shifts by weeks across the state. The window to sow seed directly outdoors runs from about May 17 in Casper to June 27 in Jackson — below are local dates for 11 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Cheyenne | 5b | May 14 | October 1 | May 21 – June 4 |
| Casper | 5a | May 10 | September 29 | May 17 – May 31 |
| Gillette | 4b | May 15 | October 1 | May 22 – June 5 |
| Laramie | 4a | June 7 | September 4 | June 14 – June 28 |
| Rock Springs | 5a | May 24 | September 24 | May 31 – June 14 |
| Sheridan | 5a | May 21 | September 23 | May 28 – June 11 |
| Evanston | 5a | June 12 | September 12 | June 19 – July 3 |
| Green River | 5a | May 24 | September 22 | May 31 – June 14 |
Acorn Squash in Wyoming: FAQ
When can I plant acorn squash in Wyoming?
Across Wyoming, the time to direct-sow acorn squash spans roughly May 17 in Casper to June 27 in Jackson, each following that city's local frost dates.
Does the acorn squash planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right acorn 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 acorn squash take to grow in Wyoming?
Acorn Squash takes about 80–100 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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