When to plant Winter squash in South Carolina

In fall, from June 1 – July 1 in Gaffney to Aug 1 – Sept 1 in Port Royal.

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 South Carolina
PlaceSpringFall
Aiken—June 20 – July 20
Anderson—June 20 – July 20
Beaufort—July 15 – Aug 15
Bluffton—July 15 – Aug 15
Cayce—July 1 – Aug 1
Charleston—Aug 1 – Sept 1
Clemson—June 10 – July 10
Columbia—June 20 – July 20
Conway—July 1 – Aug 1
Easley—June 10 – July 10
Florence—June 20 – July 20
Forest Acres—July 1 – Aug 1
Fort Mill—June 10 – July 10
Fountain Inn—June 20 – July 20
Gaffney—June 1 – July 1
Goose Creek—July 15 – Aug 15
Greenville—June 20 – July 20
Greenwood—June 20 – July 20
Greer—June 20 – July 20
Hanahan—July 15 – Aug 15
Hardeeville—July 15 – Aug 15
Hilton Head Island—Aug 1 – Sept 1
Irmo—June 10 – July 10
James Island—Aug 1 – Sept 1
Lexington—June 20 – July 20
Mauldin—June 20 – July 20
Moncks Corner—July 15 – Aug 15
Mount Pleasant—July 15 – Aug 15
Myrtle Beach—June 20 – July 20
Newberry—June 20 – July 20
North Augusta—July 15 – Aug 15
North Charleston—July 15 – Aug 15
North Myrtle Beach—July 1 – Aug 1
Orangeburg—June 20 – July 20
Port Royal—Aug 1 – Sept 1
Rock Hill—June 20 – July 20
Simpsonville—June 20 – July 20
Spartanburg—June 10 – July 10
Summerville—June 20 – July 20
Sumter—June 20 – July 20
Tega Cay—June 10 – July 10
West Columbia—June 20 – July 20

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.