Plants in large planters in greenhouse.

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 & Updates

  • CPCNW Material Sales Fee Schedule for 2024 Dear Stakeholders, We have an updated material sales fee schedule as of January 1, 2024. If you have any questions, please email 2024 Material Sales Fee Schedule Thanks, CPCNW Staff
  • CPCNW 2023 Letter to Stakeholders Dear CPCNW Stakeholders, With spring finally here, we are taking the opportunity to apprise you of recent achievements and developments at CPCNW in the attached letter. We wish you all a prosperous 2023. Sincerely, Clean Plant Center Northwest CPCNW 2023 Letter to Stakeholders
  • CPCNW Winter Holiday Closure 2023-2024 The CPCNW will be closed for the winter holidays between the 25th of December 2023 and the 1st of January 2024. During this time will we be unable to respond to any correspondence.