Lynn Ketchum

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Tree School Clackamas teaches love for the land

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

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

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.

By Kym Pokorny | News Story

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!

Article

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.

By Kym Pokorny | News Story

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.

By Chris Branam | News Story

Conifers – especially Doug-firs – are suffering from drought

Aug 31, 2018
Several dry, warm years are taking their toll on Oregon conifers.

By Kym Pokorny | News Story

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Have a Question? Ask an Expert!

Ask an Expert is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.

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My monkey puzzle tree has me puzzled, any ideas?

I have a Monkey Puzzle tree that's 20+ ft. and should be at least 40 years old. The lower limbs have been drying out and turning brown. Nothing unusual this year as in years past, have not disturbed it.

By Linda Krugel | Featured Question