CNPS makes progress against pathogen threat to native plants

Comparison of healthy and unhealthy sticky monkeyflower, courtesy of Suzanne Rooney-Latham, CDFA.

Comparison of healthy and unhealthy sticky monkeflower, courtesy of Suzanne Rooney-Latham, CDFA

May 31, 2016, marked the one-year anniversary of the CNPS Chapter Council’s decision to form an Ad Hoc Committee on Phytophthoras.  This decision was triggered by a request from the Willis Jepson Chapter for CNPS to enact a policy addressing the threat that Phytophthoras and other harmful plant pathogens pose to California native plants.  Since that time the Ad Hoc Committee has completed almost all the tasks necessary to fulfill the intent of the Chapter Council.  The committee’s hard work and steadfast dedication is owed a debt of gratitude for the contributions they have made in just one year’s time.  Their accomplishments were shared with Chapter Council at the June 2016 meeting, focusing on progress made and opportunities for education and assistance on Phytophthora prevention.  Here are some highlights from the committee’s progress report:

  • We collaborated with the U.C. Cooperative Extension’s Working Group on Phytophthoras in Native Habitats to develop Best Management Practices by nurseries and project sponsors to minimize pathogens in native plant nursery stock used in habitat restoration projects;
  • We developed Best Management Practices for clean nursery practices for use by CNPS Chapter Plant Sale Growers to minimize pathogens in CNPS plant sale stock;
  • We conducted two workshops to educate CNPS Chapter Plant Sale Growers on clean nursery practices; and
  • We drafted a CNPS policy on Preventing Infection and Spread of Harmful Pathogens via Native Plan Nursery and Plant Sale Stock, which the Chapter Council adopted last December.

From this point onward, the Ad Hoc Committee will:

  • Educate CNPS Chapter Plant Sale Growers about harmful plant pathogens through our website;
  • Support CNPS Chapters in implementing Best Management Practices that will minimize pathogens in CNPS plant sale stock by offering site visits or consultations by Committee experts; and
  • Collaborate with other organizations on new developments, outreach, research, programs and legislation that support the CNPS plant pathogen policy.

If you want to learn more about how Phythophthoras are affecting native plants you can attend a free symposium session sponsored by the University of California on June 23 at Fort Mason Center in San Francisco (free but registration is required).

If your CNPS Chapter needs assistance to implement Best Management Practices in your nursery, contact Steven Goetz at sgoet@sbcglobal.net.

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