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Showing 1 - 5 of 5 results.

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

Entomology for Gardeners

Classification and names Phylum: Arthropoda Class: Insecta = Insects (Arachnida = Spiders) Order: The technical name of the orders describes the wings. For example: Coleoptera: “coleo” = sheath; “ptera” = wing; that is, a sheath-wing insect. Family Genus and species: scientific name = the Latin name. Genus begins with a capital letter; species begins with a small letter....

Jean R. Natter | Jan 2019 | Article

Basic Entomology

Insects can be found in great numbers in every ecosystem on our planet except for the ocean. There are over a million different identified species of insects in the world, but only an estimated 31,000 identified species of ‘Mammals’, ‘Birds’, ‘Reptiles’ and ‘Amphibians’. There are over 28,000 different identified species of insects in the Pacific Northwest alone. ...

Richard Little | Jan 2016 | Article