When to plant yardlong bean in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant yardlong bean shifts by weeks across the state. The window to transplant seedlings outdoors runs from about May 24 in Casper to July 4 in Jackson — below are local dates for 11 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Cheyenne | 5b | May 14 | October 1 | May 28 – June 4 |
| Casper | 5a | May 10 | September 29 | May 24 – May 31 |
| Gillette | 4b | May 15 | October 1 | May 29 – June 5 |
| Laramie | 4a | June 7 | September 4 | June 21 – June 28 |
| Rock Springs | 5a | May 24 | September 24 | June 7 – June 14 |
| Sheridan | 5a | May 21 | September 23 | June 4 – June 11 |
| Evanston | 5a | June 12 | September 12 | June 26 – July 3 |
| Green River | 5a | May 24 | September 22 | June 7 – June 14 |
Yardlong Bean in Wyoming: FAQ
When can I plant yardlong bean in Wyoming?
Across Wyoming, the time to transplant yardlong bean spans roughly May 24 in Casper to July 4 in Jackson, each following that city's local frost dates.
Does the yardlong bean planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right yardlong bean 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 yardlong bean take to grow in Wyoming?
Yardlong Bean takes about 70–90 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.