P. ramorum in Nurseries

This section of the website is devoted to P. ramorum-related issues critical to nurseries, independent growers, and related plant-care/plant propagation industries. The pages include a comprehensive chronology of the problem of P. ramorum in nurseries, summaries and home pages for the agencies involved in the management of the problem, periodic updates and pest alerts, and diagnostic guides. Scroll down to see the full list of resources available.

Resources available through the California Oak Mortality Task Force and its partners

Nursery Chronology (last updated July 2017): A summary of the status of P. ramorum in US Nurseries.

Nursery Diagnostic Guides:

Nursery Best Management Practices: These Best Management Practices (BMP’s) are designed to control or eliminate the diseases caused by P. ramorum.

Trainings and Professional Education for Nurseries:

Nursery Photos – Symptoms:

Nursery Photos – Management:

  • WSU Water: This link offers a useful photo gallery of nursery practices demonstrating methods to prevent and enhance the spread of p. ramorum in relation to water. The site also provides a link to a water sampling protocol specified for nurseries, and another link to the University of Florida’s comprehensive water management site for horticulture.
  • WSU Soil: This link offers a useful photo gallery of nursery practices demonstrating methods to prevent and enhance the spread of p. ramorum in relation to soil and potting media. The site also provides documents for treatment and disinfection procedures, as well as bio-security measures for nurseries.
  • WSU Containers: This link offers useful photos depicting nursery practices around container management that can prevent or enhance the spread of p. ramorum. Furthermore, a list of container management techniques are provided along with a link to suggested chemicals for use when treating and maintaining containers.
  • BC nursery: This link shows photos from a British Colombia nursery, including infected Rhododendrons, securing the plants, and destruction procedures.

P. ramorum Nursery Research Needs Lists: Prioritized lists of research needs, from March 2008 and June 2010.

Additional resources and links