Tree Care
Lynn Ketchum
Featured Resources
Tree Thinning for Health and Vigor
Many landowners ask about proper or optimum spacing when thinning trees.
The age old secret to tree planting is...
Green Side up and brown side down. Seriously, it is that easy! But, just in case you are a detail oriented person here are a few extra things to consider while getting those roots in the ground.Latest Resources
Tree School Clackamas teaches love for the land
Educational event draws hundreds from woodland community in Clackamas County and beyond.
Treat your Christmas tree to vodka? Only if you want to waste it
Nov 30, 2018
OSU Extension expert busts myths about taking care of Christmas trees.
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!Latest News
Treat your Christmas tree to vodka? Only if you want to waste it
Nov 30, 2018
OSU Extension expert busts myths about taking care of Christmas trees.
Genetic behavior reveals cause of death in poplars essential to ecosystems, industry
Oct 25, 2018
Scientists studying the valuable, but vulnerable, black cottonwood poplar have identified the genetic mechanism responsible for the species’ inability to resist a pervasive and deadly disease.
Conifers – especially Doug-firs – are suffering from drought
Aug 31, 2018
Several dry, warm years are taking their toll on Oregon conifers.
