The Clean Plant Center Northwest holds and maintains a foundation collection of virus-tested, G1-level Hop accessions at Washington State University’s Irrigated Agriculture Research and Extension Center in Prosser, WA. These accessions are maintained in insect-proof screenhouses to prevent reinfection, and are regularly tested to ensure their cleanliness. Accessions held in the foundation collection are available for sale and distribution to growers and nurseries across the United States.


All available accessions have undergone a series of diagnostic assays to ensure that they are free of economically important viruses and virus-like organisms. Please click on the following link for a list of currently available Hop accessions.

Please note that this list contains only accessions that have reached full release status and are presently available; accessions that are in progress, or accessions that have been removed, are not shown.

Ordering and Distribution

The CPCNW has a single hop sale/distribution period that runs throughout much of the year. This is:

Shoots: Requests taken from March 1st through August 31st

Unrooted green cuttings are offered for sale and distribution throughout the summer and early fall, weather permitting. Shoots are approximately 10-12 inches long, with an average of 5 nodes per cutting. All Request Forms must be accompanied by a CPCNW Sales Agreement, and any requests for proprietary material must be accompanied by a Proprietary Material Distribution Agreement.

Fee Schedule and Payment (All prices in USD)

Shoot tips: $25.00 per cutting, minimum order of two cuttings per variety.

Additional Charges: For orders picked up at the CPCNW facility, there will be no shipping fees charged, although all other fees will apply. For all orders, the final invoice will include:

  • 10% handling and packaging fee for domestic shipments
  • Actual shipping cost (calculated at time of shipment)
  • Phytosanitary certificate (if applicable) at $175 per order shipped in the US, and $200 per order shipped internationally

Payment: Once the shipment is prepared, an invoice will be sent to the customer. This may be payed either by credit card via our secure payment link, or by sending a check for invoiced amount made out to CPCNW/WSU to 24106 N Bunn Rd, Prosser, WA 99350. Orders will not be shipped until payment has been received.

International Shipments

The CPCNW regrets to inform our international customers that we cannot ship green hop cuttings internationally to any country other than Canada.