National Clean Plant Network
National Clean Plant Network
National Clean Plant Network
University of California
National Clean Plant Network

NCPN Newsletters

In-Depth Look at NCPN Crops Continues

NCPN-Sweetpotato Hits the Ground Running!

Sweetpotatoes joined the National Clean Plant Network (NCPN) in 2015 and participants have made huge strides in a short amount of time.

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  • Breeding for Disease Resistance

    RosBREED is a national research and extension team focused on targeting breeding approaches in Rosaceae crops for disease resistance, horticultural quality and increased consumer satisfaction. Learn more about who is on the team and their research by clicking the link below.

  • Field Guide Integrated Pest Management in Hops

    Start clean by purchasing virus tested hops for your yard and stay clean by following best management practices outlined in the link below.

  • Video on Virus Elimination Therapy

    "Excising sweetpotato microshoot tips for virus elimination therapy” is now available on YouTube.

  • Grapevine 'Variety Focus' Lectures Available for Viewing

    Grapevine ‘Variety Focus' lectures are now available on Foundation Plant Service's website at These lectures, from 2005-2011, were given by a talented group of guest speakers including UC Davis faculty, UC farm advisors, experienced California growers and winemakers as well as guest speakers from the focus variety country of origin.

  • Five Tips for Safeguarding Berry Farms from Virus Disease

    Plant resistant varieties where available. Never propagate from material that has not been virus-tested. Know the viruses that circulate in your area and their vectors. Never plant in fields with history of soil-borne viruses. Avoid areas with high incidence of pollen-borne virus. You cannot control pollen.  

  • Rose Rosette Disease Video Available

    View the 'What Wednesday' video clip on Rose Rosette disease: TXPlantClinic/videos/ 10154736863317558/   Are you aware there is a website dedicated to Rose Rosette disease? Check it out at:

NCPN LogoThe National Clean Plant Network (NCPN) produces and distributes asexually propagated plant material free of targeted graft transmissible plant pathogens to ensure the global competitiveness of specialty crop producers and to protect the environment. The NCPN operates under the auspices of three agencies within the United States Department of Agriculture - Animal and Plant Health Inspection Service (APHIS), Agricultural Research Service (ARS) and National Institute of Food and Agriculture (NIFA).



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