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Browse Urban Forestry Resources
Stephen Ward
Displaying 1 - 10 of 19 resources
Featured Question
Can you identify this black and white bug?
I have lived in Oregon all my life and never seen this kind of bug before, what is it? It's not very fast moving, this one wasn't anyway.
Online Resource
International Society of Arboriculture (ISA) - Pacific Northwest Chapter
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.
Featured Question
What is up with this tree?
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?...
Featured Question
Are there insect issues with birch trees?
Is it true that white paper birch in the Willamette Valley have been infested with insect like beetle? I wanted to plant one this spring and my yard maintenance service told me I should consider a different type due to the insect problem.
Featured Question
Wild red asparagus, yum or yuck?
Found in numerous places in our garden. Is it poisonous? Would like some additional info. Understand that it is rare.
Featured Question
How can I save my Aspen?
Can you help me save my Aspen tree? The lower branches turned black which I cut off. Holes in trunk at ground level. Gouges/Scratches at approx 6' above ground level.
OSU Extension Catalog
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)
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...
OSU Extension Catalog