Sweet Potato Vardaman

100 Days. This bush type variety produces sweet potatoes with bright orange flesh and golden skin that darkens after harvest. The bush habit makes this variety great for small spaces or container gardening. Delicious and nutritious, sweet potatoes are easy to grow from these freshly dug, certified sweet potato transplants (slips). Sweet potatoes need a long, warm growing season, but can be grown in every state. Northern areas benefit from using black plastic to warm the soil.