Currently, the emerald ash borer has been found in trees only in Washington County, where a quarantine prohibits moving ash (Fraxinus) or fringe tree (Chionanthus) wood in or out of the area.
While relatively healthy, forests in western Oregon face threats from climate stress, insects and disease. Here's a look at forest management strategies to cope with those threats and keep the state's forests healthy.
In the winter, many gardeners' heads are filled with visions of flourishing plants and bountiful harvests. Making those visions into reality starts with seeds. Here's what to consider when deciding on seeds to buy.
This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon birch trees from this damaging pest. Includes insect identification, host plants, signs and ...
Excessive summer irrigation of oak and madrone trees may promote fungal diseases such as the oak root fungus (aka armillaria root disease) and crown rot.
This article briefly discusses the most prevalent madrone disease problems, then offers a broader perspective on the health of this southern Oregon native.
Max Bennett, David C. Shaw |
Nov 2006 |
Article
Photo Credit: Whitney Cranshaw, Colorado State University, Bugwood.org (Cropped from original)
Q: I had an arborist out because one of my birch trees had died and needed removal. He said it was the bronze birch beetle and that it was beginning to affect a second birch. He said it could be treated with a ...
This webinar will cover a visual method for assessing survival of trees that have been injured by wildfire. We will also discuss specifically how salvage operations are conducted, equipment used, wildlife considerations, economics, ...
Glenn Ahrens, Stephen Fitzgerald |
Oct 2020 |
Video