When to plant Winter squash in Utah

In fall, from May 20 – June 10 in Eagle Mountain to June 20 – July 20 in Washington.

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 Utah
PlaceSpringFall
Alpine—June 1 – July 1
American Fork—June 1 – July 1
Bluffdale—June 1 – July 1
Bountiful—June 1 – July 1
Brigham City—June 1 – 15
Cedar City—June 1 – July 1
Centerville—June 1 – July 1
Clearfield—June 1 – July 1
Clinton—June 1 – July 1
Cottonwood Heights—June 1 – July 1
Draper—June 1 – July 1
Eagle Mountain—May 20 – June 10
Farmington—June 1 – July 1
Grantsville—June 1 – July 1
Heber—May 20 – June 10
Herriman—June 1 – July 1
Highland—June 1 – July 1
Holladay—June 1 – July 1
Hurricane—June 20 – July 20
Hyrum—June 1 – 15
Ivins—June 20 – July 20
Kaysville—June 1 – July 1
Kearns metro—June 10 – July 10
Layton—June 1 – July 1
Lehi—June 1 – July 1
Lindon—June 1 – July 1
Logan—June 1 – 15
Magna metro—June 10 – July 10
Mapleton—June 1 – July 1
Midvale—June 1 – July 1
Millcreek—June 1 – July 1
Murray—June 1 – July 1
North Logan—June 1 – July 1
North Ogden—June 1 – July 1
North Salt Lake—June 1 – July 1
Ogden—June 1 – July 1
Orem—June 1 – July 1
Payson—June 1 – July 1
Pleasant Grove—June 1 – July 1
Pleasant View—June 1 – July 1
Provo—June 1 – July 1
Riverton—June 1 – July 1
Roy—June 1 – July 1
Salem—June 1 – July 1
Salt Lake City—June 20 – July 20
Sandy—June 1 – July 1
Santaquin—June 1 – July 1
Saratoga Springs—June 1 – July 1
Smithfield—June 1 – 15
South Jordan—June 1 – July 1
South Ogden—June 1 – July 1
South Salt Lake—June 20 – July 20
Spanish Fork—June 1 – July 1
Springville—June 1 – July 1
St. George—June 20 – July 20
Syracuse—June 1 – July 1
Taylorsville—June 20 – July 20
Tooele—June 1 – July 1
Tremonton—June 1 – July 1
Vernal—June 1 – July 1
Vineyard—June 1 – July 1
Washington—June 20 – July 20
West Haven—June 1 – July 1
West Jordan—June 1 – July 1
West Point—June 1 – July 1
West Valley City—June 10 – July 10
Woods Cross—June 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 winter squash.