TRUE POTATO SEED. Recently, two talented young Dutch plant breeders developed horticultural potato seed in the US. There are several advantages to using true seed: lower cost than mini-tubers, completely disease free and always available at the right time for growers in any region of the country. These three varieties yield about 2 pounds or more when well grown. They mature 100 days from transplant or 50 days for baby potatoes. We don't sell potato seed outside the US, however international and commercial growers may contact us for a referral.