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Tree Care

Photo: Lynn Ketchum (Cropped from original)

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Featured Resources

Tree thinning for health and vigor

Simple guidelines for thinning your woodlands call for removing undesirable trees and making room for the best ones.

Max Bennett, Stephen Fitzgerald | Jul 2017 | Article

The age-old secret to tree planting is ...

Getting tree seedlings into the ground is simple: green side up, brown side down. The most important work comes beforehand with proper care and choosing a site that has lots of sunshine, good drainage and room to grow.

Lauren Grand | Nov 2018 | Article

Many forest insects are mistaken for tree killers

Found an insect in your tree? Chances are it's not a pest. Here's what to look for.

Amy Grotta | Jul 2019 | Article

Latest Resources

Episode 25: Early Seral Forests (in English)

In this episode, Lauren Grand and Graham Frank discuss early seral forest's importance and key features.

Lauren Grand, Graham Frank | Sep 2022 | Podcast episode

Emerald Ash Borer resources

Learn how to identify the emerald ash borer beetle and ash trees, what you can do and ways Oregonians are planning for and preventing the spread of this destructive insect.

Aug 2022 | Collection

Episode 24: Swiss Needle Cast (in English)

In this episode, Jacob Putney invites Dave Shaw and Gabriela Ritokova on the podcast to discuss Swiss Needle Cast's impact on Douglas fir populations. Dave Shaw is an OSU extension forest health specialist and Gabriela Ritokova is an ODF forest pathologist.

Jacob Putney, David C. Shaw, Gabriela Ritokova | Aug 2022 | Podcast episode

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Grand fir trees dying from dought and heat
Photo: John Punches

Why are my trees dying?

Trees all over Oregon are displaying signs of poor health. People are quick to blame insects, but insects are rarely the underlying cause of the problem. Drought and other stressors can make trees vulnerable to pests and disease.

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Latest News

Extension outreach results in thousands of seedlings planted in fire-scarred Jackson County (in English)

Kara Baylog, OSU Extension forestry outreach coordinator in Jackson County worked with the Jackson Soil and Water Conservation District to contact landowners in the 2020 fire scar to offer free seedlings.

Kara Baylog | Mar 2022 | Impact story

Give overgrown trees a makeover with new OSU pruning video series

Knowledge is everything when it comes to pruning mature trees.

Kym Pokorny | Feb 18, 2022 | News story

Forestry Extension assists state with monitoring the invasive spongy moth (in English)

FNR agents and volunteers deployed and collected 340 traps across western Oregon for the IPPM program.

Dan Stark | Mar 2021 | Impact story

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Forestry & Natural Resources
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How should our community respond to emerald ash borer?

P: I am chair of our city tree commission, and have a couple of questions about emerald ash borer (EAB): 1. We have many planted ash trees in city parks and on rights-of-way, although the tree is now on the list of ...

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