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Hops

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 screen houses to prevent reinfection and are regularly tested to ensure cleanliness. Accessions held in the foundation collection are available for sale and distribution to growers and nurseries across the United States.

Availability – Updated 09.29.2022

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 Hop accessions.

Please note that this list contains only accessions that have reached full release status and are presently available; accessions 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:

Rhizomes (Special Sale 2023 Only): Requests taken from October 1st through January 31st

Rhizomes – Two 6” to 8” root cuttings, with an average of 5 nodes per cutting. The price per two root cuttings is $50 USD.  All orders will be fulfilled by February 28, 2023.

A CPCNW Sales Agreement must accompany all Request Forms, and Proprietary Material Distribution Agreement must accompany any requests for proprietary material.

Tissue Culture Micropropagules: Requests taken May 1st through August 31st

Unrooted Tissue Culture Shoots – small (1” to 2”) shoot tip cuttings containing approximately two nodes that have been surface sterilized and placed into tissue culture media to harden and callus before shipment. These will need to be either transferred to rooting media or sub-cultured for further propagation.

A CPCNW Sales Agreement must accompany all Request Forms, and Proprietary Material Distribution Agreement must accompany any requests for proprietary material.

Rooted Tissue Culture Plantlets – larger (2” to 3″) proliferated shoot tip cuttings at least two nodes that been grown in tissue culture for a period sufficient to produce (~1” long”) roots. These will require careful transplanting and hardening in greenhouse or similar protected environment before being ready to place outdoors.

A CPCNW Sales Agreement must accompany all Request Forms, and Proprietary Material Distribution Agreement must accompany any requests for proprietary material.

Green Cuttings (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 12-18 inches long, averaging 5 nodes per cutting.

A CPCNW Sales Agreement must accompany all Request Forms, and Proprietary Material Distribution Agreement must accompany any requests for proprietary material.

Flat of 50 Plugs: Requests taken year-round

8-10 week old, rooted softwood cutting, 1.75″ x 2″ round Ellepot plug flat. Minimum orders for plugs are one flat per selection/clone, with 50 plants per flat. Please allow 10-12 weeks for order fulfillment, and indicate the delivery window on order request forms. CPCNW staff will maintain communication throughout the growing season to identify mutually agreeable shipping or order pick-up windows based on plant maturity.

A CPCNW Sales Agreement must accompany all Request Forms, and Proprietary Material Distribution Agreement must accompany any requests for proprietary material.

Fee Schedule and Payment (All prices in USD)

Fee Schedule: CPCNW has updated its fee schedule for product pricing and processing as of April 1, 2022. Current fee schedule. 

Payment: Once the shipment is prepared, an invoice will be sent to the customer. This may be paid either by credit card via our secure payment link or by sending a check for the 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.