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. These uniformly medium-sized oval tubers have white, lightly netted skin and white flesh. They have deep eyes when they grow large and 3+ lb spuds are possible. Very tasty for fries. Resistant to late blight and scab. Dependably high yields from large, vigorous, upright-growing plants. Good for Northern gardeners.