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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

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

Plant conifer trees correctly

Tips to improve conifer planting success

Feb 29, 2008 | News Story

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

In droughty Klamath Falls, watering trees may help defend against bronze birch borer

Symptoms of the voracious insect appear for the first time in Klamath Falls

Gail Wells | Jun 29, 2017 | 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

What’s Wrong With My Madrone?

This article briefly discusses the most prevalent madrone disease problems, then offers a broader perspective on the health of this southern Oregon native.

Max Bennett, Dave Shaw | Nov 2006 | Article