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. This is the only purple fingerling. The medium to large sized tubers need really rich soil and lots of water to prosper. This is a very popular variety at the farmer's market!