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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

How to collect a plant specimen for disease diagnosis

A guide for how to collect and where to get a sample analyzed for plant diseases.

Melodie Putnam, Carol Savonen | Jul 2014 | Article

Poison hemlock and Western waterhemlock: deadly plants that may be growing in your pasture

Poisonous plants are a major cause of economic loss to the livestock industry. Two poisonous plants common to Oregon are poison hemlock and Western water hemlock. Ingestion of either by humans or livestock typically results in death.

Scott Duggan | Jun 2018 | Article

Grapevine Trunk Diseases in Oregon

A summary of the main trunk diseases causing issues in Oregon and management methods.

Melodie Putnam | Mar 2019 | Article