When to plant Kale in Wyoming

In spring, from Apr 10 – May 1 in Casper to May 15 – June 1 in Laramie.

In fall, from May 15 – June 15 in Evanston to June 15 – July 15 in Gillette.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Kale planting dates by place in Wyoming
PlaceSpringFall
CasperApr 10 – May 1June 15 – July 15
CheyenneApr 10 – May 1June 15 – July 15
CodyApr 10 – May 1June 15 – July 15
EvanstonMay 15 – June 1May 15 – June 15
GilletteApr 10 – May 1June 15 – July 15
Green RiverApr 20 – May 10June 1 – July 1
JacksonMay 15 – June 1May 15 – June 15
LaramieMay 15 – June 1May 15 – June 15
RivertonApr 10 – May 1June 1 – July 1
Rock SpringsApr 20 – May 10June 1 – July 1
SheridanApr 20 – May 10June 1 – July 1

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for kale.