What may appear at first glance as a sea of sagebrush is in reality a complex and diverse ecosystem with a wide variety of plants and animals. The sagebrush steppe teems with life, but threats such as wildfire, grazing and invasive species are affecting the resilience of rangeland across the Northwest. Learn more about the groups of plants that make up a healthy rangeland ecosystem.
Invasive forest pests are being transported throughout the continent in untreated firewood. Examples of these non-native threats that can occur in firewood include the emerald ash borer, Asian longhorned beetle, Sirex woodwasp, sudden oak death, oak wilt, and pitch canker, all of which can survive months in firewood. The purpose of this publication is to alert Oregonians to the ...
This play is designed to explore what we value about forests. Target audiences are adults and high-school youth; can be adapted for children. Click the "view it now" button to view or download the 40-page script, which includes 11 scenes and suggestions for staging and costuming. The supplemental file below is a theater program that also serves as a discussion guide and includes references to further sources of information.
Sitka spruce is among the world's fast-growing trees and the largest of the world's spruces. It's a valuable commercial timber. Its range extends from Alaska to northern California, but it faces unique problems along the Oregon Coast. This publication explores some of the insects and diseases that confront the tree in Oregon.
Yellow toadflax and Dalmatian toadflax are non-native plants that have become two of the most troublesome invasive weeds in North America. Infesting forests, range and grasslands, and other areas, these two weeds are very prevalent in the Pacific Northwest. This publication outlines the plants’ characteristics, variations, growth and reproduction, distribution and economic impact, as well as management strategies.
This curriculum is a resource for Extension foresters, educators, natural resource professionals, landowners, and others wishing to increase their ability to assess and mitigate forest health situations. This curriculum includes an Instructor’s Guide for those leading Pest Scene Investigator training sessions and chapters for participants that provide information and pictures that explain important strategies and techniques for detecting problems affecting forests.
On October 25th, Dr. Dave Shaw, OSU Extension Forest Health Specialist, gave a presentation to an enthusiastic group of landowners about some of the issues our native trees have been having this year. Here is a rundown of what he discussed.
Trees all over Oregon are displaying signs of poor health. People are quick to blame insects, but insects are rarely the underlying cause of the problem. Drought and other stressors can make trees vulnerable to pests and disease.
In May 2019, an Oregon Forest Pest Detector (OFPD) program graduate submitted a report to the Oregon Invasive Species Hotline after finding D-shaped exit holes and a green insect on a twinberry in her yard in southeast Portland. She recognized the signs as characteristic of insects in the genus Agrilus, which includes the deadly forest pest emerald ash borer. The green ...