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. Released in 1981, this medium to large sized tuber has reddish purple flowers and is one of the heaviest yielding russets. It is excellent for baking and french fries and it's one of the best storage potatoes. Resistant to scab and necrosis but susceptible to blackspot and hollow heart.