When to plant broccoli in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant broccoli 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 7 |
| Casper | 5a | May 10 | September 29 | April 19 – May 3 |
| Gillette | 4b | May 15 | October 1 | April 24 – May 8 |
| Laramie | 4a | June 7 | September 4 | May 17 – May 31 |
| Rock Springs | 5a | May 24 | September 24 | May 3 – May 17 |
| Sheridan | 5a | May 21 | September 23 | April 30 – May 14 |
| Evanston | 5a | June 12 | September 12 | May 22 – June 5 |
| Green River | 5a | May 24 | September 22 | May 3 – May 17 |
Broccoli in Wyoming: FAQ
When can I plant broccoli in Wyoming?
Across Wyoming, the time to transplant broccoli spans roughly April 19 in Casper to May 30 in Jackson, each following that city's local frost dates.
Does the broccoli planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right broccoli 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 broccoli take to grow in Wyoming?
Broccoli takes about 55–80 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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