When to plant peas in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant peas shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 29 in Casper to May 9 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 | April 2 – April 30 |
| Casper | 5a | May 10 | September 29 | March 29 – April 26 |
| Gillette | 4b | May 15 | October 1 | April 3 – May 1 |
| Laramie | 4a | June 7 | September 4 | April 26 – May 24 |
| Rock Springs | 5a | May 24 | September 24 | April 12 – May 10 |
| Sheridan | 5a | May 21 | September 23 | April 9 – May 7 |
| Evanston | 5a | June 12 | September 12 | May 1 – May 29 |
| Green River | 5a | May 24 | September 22 | April 12 – May 10 |
Peas in Wyoming: FAQ
When can I plant peas in Wyoming?
Across Wyoming, the time to direct-sow peas spans roughly March 29 in Casper to May 9 in Jackson, each following that city's local frost dates.
Does the peas planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right peas 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 peas take to grow in Wyoming?
Peas takes about 55–70 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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