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WSU Puyallup Pacific Madrone Research

Pacific Madrone Research

Welcome to the WSU madrone research website. Here you will find information on

  • About Pacific Madrone: General information on propagating madrone, its ecology, champion trees, and more.
  • Diseases and Pests: find out what’s killing these trees.
  • Research Projects: Common garden study, disease resistance, identifying foliar pathogens, etc.
  • Distribution of Pacific madrone – photos and maps showing the distribution of Pacific madrone and types of environments where it can be found.
  • The seed collection – locations where seed has been collected, seed available for experiments and plantings.

    What’s New:

  • Join the ArbutusARME and receive our newsletter by signing up here. The newsletter will contain information about research, conservation efforts, news, art, and events.Back issues of the newsletter will be posted on this site. Watch for the first one coming out January 2019.If you have items for the newsletter, send them to
  • If you are in western Washington, consider attending one of our workshops on the subject of tree identification, forest ecology, pathogens, conservation and restoration efforts.
  • Help us collect data on the range and health condition of madrone

Common garden plantings have been established in each of California, Oregon, and Washington states, and two sites in British Columbia.

A serious foliar blight affected Pacific madrone in 2011.  We would like more information about these trees, both healthy and diseased. As before, send your descriptions and photos.

“The Future of Pacific Madrone” Mini-conference held April 19-20 2016 at WSU Puyallup.


Contact: Gary Chastagner, 253-445-4528 | WSU Puyallup Research & Extension Center, 2606 West Pioneer, Puyallup, WA, 98371-4998 USA
Last updated January 2, 2013