Stephen Ward

Urban Forestry

Displaying 1 - 10 of 23 resources

Oregon Forest Pest Detector News and Updates

Semi annual program updates and news about invasive forest insects


Klamath Basin Horticulture

Articles related to horticulture in the Klamath Basin


Tree School Clackamas teaches love for the land

Apr 2019
Educational event draws hundreds from woodland community in Clackamas County and beyond.

By Glenn Ahrens, Rose Clarke, Michael Bondi, Kimberly Jacobsen Nelson | Article

Tree Pruning Basics

Nov 2012
A 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.


Can you identify this black and white bug?

Sep 2018
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.

By Jean R. Natter | Featured Question

How can I get my clothes unsapped?

Aug 2018
How do I get pine sap off of clothing?

By Francisca Belart | Featured Question

What is up with this tree?

Apr 2018
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 | Featured Question

Are there insect issues with birch trees?

Feb 2018
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.

By Glenn Ahrens | Featured Question

Wild red asparagus, yum or yuck?

Jun 2017
Found in numerous places in our garden. Is it poisonous? Would like some additional info. Understand that it is rare.

By Amy Jo Detweiler | Featured Question