When to plant Celery in Wyoming

In spring, from Apr 20 – June 15 in Casper to June 1 – 15 in Laramie.

In fall, from May 1 – June 1 in Jackson to June 1 – July 5 in Gillette.

Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Celery and celeriac planting dates by place in Wyoming
PlaceSpringFall
CasperApr 20 – June 15June 1 – July 5
CheyenneApr 20 – June 15June 1 – July 5
CodyApr 20 – June 15June 1 – July 5
EvanstonJune 1 – 15May 15 – June 15
GilletteApr 20 – June 15June 1 – July 5
Green RiverMay 10 – June 15May 15 – July 1
JacksonJune 1 – 15May 1 – June 1
LaramieJune 1 – 15May 1 – June 1
RivertonApr 20 – June 15May 15 – July 1
Rock SpringsMay 10 – June 15May 15 – July 1
SheridanMay 10 – June 15May 15 – 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 celery and celeriac.