PPS References and links

Online Resource

All References and Hyperlinks for each Plant Problem Scenario. Each scenario is followed by the direct hyperlink(s) to the reference.
Two people examining a tree

International Society of Arboriculture (ISA) - Pacific Northwest Chapter

Online Resource

The Pacific Northwest Chapter of the International Society of Arboriculture (PNW-ISA) is a member organization for arborists and urban foresters. We bring together professionals from Alaska, Idaho, Oregon, Washington, and British Columbia. Since 1979, we have been a resource and advocate for the green industry.

What is up with this tree?

Featured Question

We had a viewer send in this photo of a tree in Cedar Canyon near Banks, Oregon. We posted this to the OPB/ Oregon Field Guide Facebook page and now I feel a responsibility to give folks an accurate ID of what is causing this strange formation atop the tree. Mistletoe? Witch's Broom? Something else? 

By Dave Shaw

Oregon Forest Pest Detector Pest Watch—Emerald ash borer (EAB) | Monitoreo y Detección de Plagas Forestales en Oregon—El barrenador verde esmeralda del fresno (EAB)

OSU Extension Catalog

This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon trees and forests from this damaging pest. Includes insect identification, host plants, signs and symptoms, and what to do if you suspect that an insect you've seen is EAB. Esta...

By Amy Grotta, Brandy Saffell

Oregon Forest Pest Detector Pest Watch—Asian longhorned beetle (ALB) | Monitoreo y Detección de Plagas Forestales en Oregon—El escarabajo asiático de cuernos largos (ALB)

OSU Extension Catalog

This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon trees and forests from this damaging pest. Includes insect identification, host plants, signs and symptoms, how to spot an ALB (including insects that resemble ALB), and what to do...

By Amy Grotta, Brandy Saffell

How do I know if my tree is healthy?

OSU Extension Catalog

** This is a video scholarship awarded proposal ** One of the most common questions we get in the program is "What's affecting my tree? I have a tree that is sick, dying, etc..." we want to create a series of videos that will help folks understand why their tree might not be 100%. I think folks...

By Nicole Strong

Tree Protection on Construction and Development Sites

OSU Extension Catalog

This publication is a guide for protecting, conserving, selecting, maintaining, removing, and replacing trees on development sites in the Pacific Northwest.

Living Sustainably: It's Your Choice

OSU Extension Catalog

This guide focuses on making choices to improve quality of life and reduce negative impacts on the environment. Contains information and activities to help you be more thoughtful about lifestyle choices and create your personal version of sustainable living.

Selecting, Planting, and Caring for a New Tree

OSU Extension Catalog

This book is published as both an interactive app designed for tablet devices and as a downloadable pdf. Both versions cover basic information on choosing a planting site, selecting the right species for the site, proper planting techniques, and first-year care. The app includes a variety of...

By Stephen Fitzgerald

Introduction to Conifer Release

OSU Extension Catalog

Successful regeneration of forest stands often requires that crop trees be released from competing vegetation. This publication provides basic information on how to determine if release is necessary and methods for release.

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