When to plant bok choy in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant bok choy shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 19 in Casper to May 30 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 | April 23 – May 14 |
| Casper | 5a | May 10 | September 29 | April 19 – May 10 |
| Gillette | 4b | May 15 | October 1 | April 24 – May 15 |
| Laramie | 4a | June 7 | September 4 | May 17 – June 7 |
| Rock Springs | 5a | May 24 | September 24 | May 3 – May 24 |
| Sheridan | 5a | May 21 | September 23 | April 30 – May 21 |
| Evanston | 5a | June 12 | September 12 | May 22 – June 12 |
| Green River | 5a | May 24 | September 22 | May 3 – May 24 |
Bok Choy in Wyoming: FAQ
When can I plant bok choy in Wyoming?
Across Wyoming, the time to transplant bok choy spans roughly April 19 in Casper to May 30 in Jackson, each following that city's local frost dates.
Does the bok choy planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right bok choy 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 bok choy take to grow in Wyoming?
Bok Choy takes about 45–60 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.