Pre-nuclear potatoes are the earliest generation of potatoes. These are grown from tissue culture in our greenhouses. As these have never been grown in native soil and they are free of disease. These marble sized tubers can produce high yields of up to 200% or more by weight. King Harry is an early season potato with white flesh and a moist, waxy texture. This is a good storage potato. The “Harry” leaves repel bugs, such as Colorado Potato Beetles, Flea Beetles and Potato Leaf Hoppers. Late blight resistant.