Urban Forestry
Stephen Ward
Featured Resources
Invasive Weeds in Forestland: Himalayan & Evergreen Blackberry
Management options for Himalayan and evergreen blackberry in forest land: preventive steps, biological, chemical, and mechanical controls, plus grazing. Includes description of weeds and their life cycle, history of infestation in the U.S. and West, and sources of more information.
What's killed my tree?
Are you one of the many woodland owners noticing continued signs of drought on your property? Drought impacts are complex; drought stressed trees become susceptible to insects and diseases that are naturally present (typically at low levels) in our woodlands. Take these four steps to help you identify what factors might be impacting your tree health.Latest Resources
Tree School Clackamas teaches love for the land
Educational event draws hundreds from woodland community in Clackamas County and beyond.
Tree Pruning Basics
A properly pruned tree looks as natural as possible; that is to say, 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?
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.
Latest News
Conifers naturally shed needles in summer and fall
Oct 7, 2016
You're not looking at the same needles over time
