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The ABCs of NPK: A fertilizer guide

Nitrogen, phosphorus and potassium aren't just an alphabet soup of chemicals. They are essential plant nutrients that, when used correctly, help to grow a healthy garden. Learn what fertilizers to apply when in this handy guide.

Lisa Ehle | Jun 2018 | Article

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

Grapevine Trunk Diseases in Oregon

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

Melodie Putnam | Mar 2019 | Article

Estimated value of cranberries as a livestock feed

Value analysis of cranberries as a livestock feed in the U.S.

Amy Peters, Michael Gamroth, Art Poole | Aug 2001 | Article