When to plant Winter squash in Oklahoma

For a fall crop, from June 1 – July 1 in Bartlesville to June 20 – July 20 in Shawnee.

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

Winter squash planting dates by place in Oklahoma
PlaceSpringFall
Ada—June 10 – July 10
Altus—June 10 – July 10
Ardmore—June 20 – July 20
Bartlesville—June 1 – July 1
Bethany—June 10 – July 10
Bixby—June 10 – July 10
Broken Arrow—June 10 – July 10
Chickasha—June 10 – July 10
Choctaw—June 20 – July 20
Claremore—June 10 – July 10
Coweta—June 10 – July 10
Del City—June 20 – July 20
Duncan—June 20 – July 20
Durant—June 20 – July 20
Edmond—June 10 – July 10
El Reno—June 10 – July 10
Elk City—June 10 – July 10
Enid—June 10 – July 10
Glenpool—June 10 – July 10
Guthrie—June 10 – July 10
Guymon—June 1 – July 1
Jenks—June 10 – July 10
Lawton—June 20 – July 20
McAlester—June 10 – July 10
Miami—June 10 – July 10
Midwest City—June 20 – July 20
Moore—June 20 – July 20
Muskogee—June 10 – July 10
Mustang—June 10 – July 10
Newcastle—June 20 – July 20
Norman—June 10 – July 10
Oklahoma City—June 10 – July 10
Okmulgee—June 10 – July 10
Owasso—June 10 – July 10
Ponca City—June 10 – July 10
Sand Springs—June 10 – July 10
Sapulpa—June 10 – July 10
Shawnee—June 20 – July 20
Stillwater—June 10 – July 10
Tahlequah—June 10 – July 10
Tulsa—June 10 – July 10
Warr Acres—June 10 – July 10
Weatherford—June 10 – July 10
Woodward—June 10 – July 10
Yukon—June 10 – July 10

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