Learn to prevent and address tree health problems and master the basics on forest health in the Pacific Northwest.

Designed For
A course for arborists, foresters, and landscape managers.
Online, instructor-led
Course is free
Exam for CEUs is $40

The Pacific Northwest is home to many native forest remnants—groves of native trees standing in developed areas—that require special attention and care from professionals.

Learn what causes tree health problems, how to address these problems and prevent tree health issues in native forest remnants, along with an overview on forest pests and pathogens found in the Pacific Northwest.

Whether you’re a professional arborist or a landscape manager, you’ll gain valuable professional development with this online course.

  • Overview of forest pests, pathogens and other issues affecting Pacific Northwest forest health.
  • Tree health problems in native forest remnants.
  • Identification and implementation of solutions for these specific groves.
  • David Shaw

    Instructor David Shaw

    David Shaw is an associate professor in Oregon State University’s department of forest engineering, resources and management, and a forest health specialist with the Forestry and Natural Resources Extension Program. David has a doctorate in forest protection from University of Washington, and has lived and worked in Pacific Northwest forests since 1980.

  • Paul Ries

    Paul D. Ries has over 25 years of urban forestry experience at the municipal, state, national, international, non-profit, and academic levels. Currently, he is an Urban Forestry Instructor and Extension Specialist in the College of Forestry at Oregon State University (OSU) and manages the Urban and Community Forestry Assistance program for the Oregon Department of Forestry (ODF). At OSU, he teaches three online urban forestry courses and is the lead curriculum developer for new undergraduate and graduate degrees in urban forestry.  For ODF, he directs a statewide program that provides technical, financial, and educational urban forestry assistance to cities, community groups, and nonprofit organizations. Paul also holds a Type 1 national qualification as a public information officer and serves on a state Incident Management Team for wildfires, responsible for community relations, public information, media outreach, and internal communications.  Previously, Paul served as the Executive Director for the International Society of Arboriculture’s Pacific Northwest Chapter, as an urban forester with the City of Cincinnati, Ohio, and as a Forester with the Ohio Department of Natural Resources. He received a master's degree from the Ohio State University, has been an ISA Certified Arborist since 1988, and currently serves on the ISA Board of Directors.

    Paul is also a contributor to Green Infrastructure Across the Urban to Rural Continuum.