Autumn Buckskin F1 Hybrid Pumpkin Seeds. Cucurbita moschata. F1 Hybrid. Non-GMO. Annual. Long vines produce buff 15" x 10" pumpkins in approximately 110 days from sowing. Pumpkin Autumn Buckskin F1 was bred for its tan skin, dark orange, dry, and higher sugar content flesh for packed pumpkin processing. The fruits weighs from 15-18 pounds on an average. Some pumpkins can reach up to 22 pounds. They are typically cylindrical or barrel shaped but do produce some flatter decorative types.