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.

News & Noteworthy


USDA Hop Triumph released April 19, 2019.

The Clean Plant Center Northwest does have limited stock available, but is currently working on increasing the number of plants available to the public.

For more information on variety or amount of stock available, feel free to send us an email at The Clean Plant Center Northwest is happy to provide additional information anytime.

The Clean Plant Center Northwest needs your input!

In order to better serve our industry, the Clean Plant Center is asking the Grape, Hop, and Tree Fruit industries to participate in a brief 5 – 8 minute survey, in order to better understand the needs of our commodity clients. All the while determining how the Clean Plant Center Northwest can better serve our growers, and our surrounding community members.