While the Black Heart Sweet Potato Vine is grown for its foliage, it does share its Southeast Asian origins with those of the Sweet Potato you can buy in the store. This award-winning ornamental plant will form tubers that are edible, though definitely not delicious and not at all sweet! The garnet-purple, heart-shaped leaves of the SolarPower Black Heart make this a wonderful choice for mixed containers, garden beds, hanging baskets, beds and borders. Easy maintenance. Heat and drought tolerant.