For 70 years, people have turned to one book to learn about Northwest trees. This edition expands its scope, covering even more species of trees — including several rare species native to southwest Oregon. It also updates scientific names and adds a new section on how Northwest forests are likely to be affected by changing climates.
I just read about the emerald ash borer (EAB) appearing in Oregon. We have two large very nice ash trees that we don't want to cut down, no signs of infestation at this time. Would you recommend we go ahead and treat these with the pesticide injection that treats for the borer, just in case?
In this episode, Scott Leavengood visits the 33rd annual Clackamas Tree School to interview Sarah Cameron and Glenn Ahrens about what the event is and why it's so beneficial.
Scott Leavengood, Sarah Cameron, Glenn Ahrens |
Apr 2023 |
Podcast episode
In this episode, Lauren Grand invites Susan Watkins, Brett Aldrich, and Tiffany Hopkins on the podcast to discuss the value of participating in the FNR Extension's Master Woodland Manager program.
Lauren Grand, Susan Watkins, Brett Aldrich, Tiffany Hopkins |
Mar 2023 |
Podcast episode
Getting sunlight into the canopy of a tree can help provide good light penetration and air circulation, assist ripening in fruit trees, and is pleasing to look at. Join our pruning pros for a demonstration on thinning the canopy of a mature crabapple tree.
How to remove a wayward branch that doesn't contribute to the structure and aesthetic of a tree. With Oregon State University Extension’s Nicole Sanchez and certified arborists John Bellon and Tom Ford.
We have an old growth juniper on our property, and it has been taken over by squirrels. They have made their homes underneath the tree. I am afraid they will weaken the root structure, and the tree could fall over in ...
I live inland from the coast about 10 miles at the boundary of the Siuslaw National Forest, and yesterday's heat (99 degrees here) did severe damage to the forest trees, my blueberry bushes, rhododendrons, and most all of ...
Brad Withrow-Robinson |
Jun 2021 |
Featured question
My beautiful cedars are now showing some dying branches. I’d like to send a photo to confirm if it has that fungus or beetle that’s killing lots of trees. And whether I need to cut them down before it gets dangerous to do so.
Extension curated and disseminated essential information about the devastating pest and assist with initial monitoring efforts to determine how far and fast the insect is spreading in Oregon.
Ask Extension 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.
Q: I just read about the emerald ash borer (EAB) appearing in Oregon. We have two large very nice ash trees that we don't want to cut down, no signs of infestation at this time. Would you recommend we go ahead and treat these with the pesticide injection that treats for the borer, just in case?
