Displaying 1 - 10 of 23 resources
Apr 2019Educational event draws hundreds from woodland community in Clackamas County and beyond.
Nov 2012A properly pruned tree looks as natural as possible; the tree’s appearance reflects its fundamental form and character. The pruner must be sensitive to maintaining this structural integrity, in addition to knowing a bit about tree biology and proper pruning principles.
Sep 2018I 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.
Apr 2018We 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?
Feb 2018Is 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.