I don't know if the US has one, but many European countries do. https://www.gov.uk/guidance/the-seed-potato-classification-scheme https://www.gov.uk/guidance/t

I don't know if the US has one, but many European countries do. https://www.gov.uk/guidance/the-seed-potato-classification-scheme https://www.gov.uk/guidance/the-seed-potato-classification-s...