Clean Plant Center Northwest

Welcome to the Clean Plant Center Northwest

The Clean Plant Center Northwest (CPCNW) is a part of the National Clean Plant Network and is based at Washington State University (WSU) Irrigated Agriculture Research and Extension Center in Prosser, Washington.

With funding from the USDA and commodity groups, we work closely with fruit tree, grape, and hop industries to propagate, maintain and distribute virus-tested fruit trees, grapevines, and hop plants from our facilities at WSU. Our connection to the agriculture industry ensures we continue to provide plant material that is relevant and economically important to each commodity. Our philosophy of “start clean, stay clean” emphasizes the importance of planting with clean materials to ensure high-quality production from orchards, vineyards, and hop yards. We provide clean plant material to nurseries, growers, and research agencies. The clean ‘mother’ plants in our greenhouses, screen houses, and foundation vineyard are a cornerstone of the U.S. pome and stone fruit, grapevine, and hop industries and state certification programs.