A specialist producer with a commitment. To its clients by being the best in the business. Excellence only nature can produce year-round quality potato seeds. A specialist producer with a commitment. To its clients by being the best in the business. Excellence only nature can produce year-round quality potato seeds. Learn more about the characteristics of our Cultivars. Learn why customers continue to root for PSP. Oops something went wrong! No data transmission .

Producing Greenhouse Grown Seed Potatoes with a Proud Tradition of Quality. Valley Tissue Culture is a seed potato company whose dedicated workers uphold a family tradition of producing the highest quality seed stock available and selling it for a fair price. The exacting process of micropropagation is the key to producing seed that gives your potatoes the best possible start.

High quality seed potatoes from Wisconsin. The fundamental goal of the Wisconsin seed program is to improve the quality and productivity of commercial potato plantings. Meeting this goal requires ample supplies of proven seed stocks from reliable sources. Wisconsin certified seed potatoes are grown and handled in accordance with strict production standards to ensure only the highest quality.