VEGETABLES / SWEET-POTATO Early. Vining, normal leaf, pale red-orange skin, yellow-orange flesh, above average yield. Introduced in 1953 by Oklahoma State. Certified Organic Slips $7 Add To Basket Listed In: 2018, 2019, 2020, 2021, 2024, 2025 Iowa USDA Hardiness: 4b View Profile & Listings