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WSU Puyallup Ornamental Plant Pathology

Ornamental Plant Pathology

DSC06123 rhodyWelcome to the WSU Puyallup Ornamental Plant Pathology program. Our program conducts research relating to diseases of ornamental plants. Specifically, we focus on ornamental bulb crops, diseases and postharvest keepability of Christmas trees, and diseases of woody ornamental plants such as the invasive Phytophthora ramorum, the causal agent of sudden oak death and ramorum foliar blight. Please explore our website to learn more about our research and extension programs.

Sudden Oak Death:

  • Managing P. ramorum and other Phytophthoras in nurseries, gardens, and landscapes
  • Monitoring streams for Phytophthora species

Bulbs and cut flowers

Christmas Trees

Pacific Madrone Research

National Elm Trial

Job and internship opportunities


Contact: Gary Chastagner, 253-445-4528

WSU Puyallup Research & Extension Center

2606 West Pioneer, Puyallup, WA, 98371-4998 USA