(Cucurbito pepo) Grown by the Hopi, Cushaw Squash are native to the southwest United States. May be used as a summer squash when young or allowed to mature to a long-storing winter squash. Prized for pies, Cushaws are also called “sweet potato pumpkins.” Fruits are heavily produced on strong plants and 15-20 inches long.Mounding or climbing habit - will scramble over ground or can be trained to climb. Full sun. Annual. 15 seeds.