Other Phytophthora species in California’s Native Habitats

Photo by Janell Hillman, Santa Clara Valley Water District

Several first-in-the-USA detections and newly identified species of Phytophthora in both native plant nurseries and restoration areas have occurred in recent years. Many of these Phytophthora species appear to have wide host ranges, capable of causing disease on plants across many families and in many different habitats. The Phytophthoras in Native Habitats Work Group formed to determine steps needed to protect wildlands and assist the restoration industry. The Work Group is now part of the California Oak Mortality Task Force and serves as an “Other Phytophthoras” committee for that group.

Quick links to additional resources

Guidelines and Best Practices

Nursery Accreditation Pilot Program

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Phytophthoras in Native Habitats Work Group

Phytophthora Testing Techniques and Protocols

Calendar of Events

11/13 – 14 – California Forest Pest Council 2019 Annual Meeting; UC Davis, CA. Meeting agenda and registration materials are available HERE.

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More information on Phytophthora detections in California native plant nurseries and restoration areas can be found below and is summarized in the following:

For more information on Phytophthora species that affect trees, visit the Forest Phytophthoras website.

The Phytophthoras in Native Habitats Work Group

Contact us for more details on how you can be involved with the Work Group.

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