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Abiotic Injury to Forest Trees in Oregon

Describes abiotic injuries caused by weather, soil, and human behavior. Provides basic information on how to understand abiotic injures, presents common examples of abiotic injury, and discusses management control practices.

May 2003 | OSU Extension Catalog

How true is the Fox News story about dying trees in Lane County?

Q: Drought was stated as what caused the trees' death, only dying pine trees were pictured. No mention of the boring insects that kill pine trees, was that omission intentional? No pictures of dying deciduous trees either. I ...

A: View answer | View all featured questions

Mulching around my tree, how can I get it right?

Q: I'm putting cardboard and chipped wood over much of my backyard to keep the weeds down. How much room should I leave free of cardboard around the trees (one planted only a year ago) so they get enough water (whether ...

A: View answer | View all featured questions

Why Does Your Tree Look Sick?

Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.

Jun 2018 | Article

Myth vs. reality: What’s the truth behind some common gardening practices?

OSU experts bust some well-established myths

Kym Pokorny | Feb 10, 2017 | News Story

Cultivating

Cultivating Healthy Farms, Forests, Food and Families in Polk County.

Newsletter

Plant conifer trees correctly

Tips to improve conifer planting success

Feb 29, 2008 | News Story

Use Caution When Irrigating Oaks and Madrones

Excessive summer irrigation of oak and madrone trees may promote fungal diseases such as the oak root fungus (aka armillaria root disease) and crown rot.

Jun 2018 | Article

Stressed trees show dieback

Browning or dieback is usually caused by weather-related stress, sometimes in combination with pests and diseases.

Mar 2018 | Article

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.

Lauren Grand | Nov 2018 | Article