When to plant gai lan (chinese broccoli) in Wyoming
Wyoming spans USDA zones 4a–5b, so the right time to plant gai lan (chinese broccoli) shifts by weeks across the state. The window to sow seed directly 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 | Direct sow |
|---|---|---|---|---|
| Cheyenne | 5b | May 14 | October 1 | April 23 – May 28 |
| Casper | 5a | May 10 | September 29 | April 19 – May 24 |
| Gillette | 4b | May 15 | October 1 | April 24 – May 29 |
| Laramie | 4a | June 7 | September 4 | May 17 – June 21 |
| Rock Springs | 5a | May 24 | September 24 | May 3 – June 7 |
| Sheridan | 5a | May 21 | September 23 | April 30 – June 4 |
| Evanston | 5a | June 12 | September 12 | May 22 – June 26 |
| Green River | 5a | May 24 | September 22 | May 3 – June 7 |
Gai Lan (Chinese Broccoli) in Wyoming: FAQ
When can I plant gai lan (chinese broccoli) in Wyoming?
Across Wyoming, the time to direct-sow gai lan (chinese broccoli) spans roughly April 19 in Casper to May 30 in Jackson, each following that city's local frost dates.
Does the gai lan (chinese broccoli) planting date vary across Wyoming?
Yes. Wyoming publishes 11 cities with their own frost dates, so the right gai lan (chinese 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 gai lan (chinese broccoli) take to grow in Wyoming?
Gai Lan (Chinese Broccoli) takes about 50–70 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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