Ips Bark Beetle
Ips bark beetle, also known as the pine engraver, is an insect that attacks and kills weak, stressed, declining and dying pine and spruce trees. Identification and management are covered in this fact sheet.
Articles
Shade Trees Disorder: Decline, Dieback, or Early Senescence
Learn about tree decline and dieback symptoms and how to prevent and treat problems that occur in this publication
Dothistroma Needle Blight
A common needle blight, Dothistroma can affect over 30 species of pine trees, especially Austrian pine. Learn symptoms and management of this disease in this facthsheet.
Swiss Needle Cast
Swiss needle cast is a fungal disease of Douglas fir. Symptoms and management of this disease are described in this factsheet.
Weir’s Cushion Rust of Spruces
Weir’s cushion rust is a needle disease that disfigures and reduces growth of spruce trees. Learn to identify and avoid problems with Weir’s cushion rust in this factsheet.
Deciduous Tree Leaf Disease Quick Reference
This factsheet will help with the identification of some common leaf diseases of deciduous trees.
Effects of Flooding on Woody Landscape Plants
“How long will my plants survive with their roots under water?” This publication will help you answer that question.
Boxelder Bug, Boisea trivittatus
Pesky boxelder bugs are very noticeable in the fall when they congregate before overwintering in buildings. To learn more about this nuisance pest, read this article…
Phytophthora Root Rot of Christmas Trees
Phytophthora root rot is a common disease of Christmas trees including Douglas-fir, balsam and true firs (e.g., Fraser, balsam and Canaan), spruces, and pines. This fact sheet covers symptoms and management.
Western Conifer Seed Bug
A large and somewhat strange-looking insect, Western conifer seed bugs are less of a plant pest than they are a nusiance when they overwinter inside homes. Learn more in this factsheet.
Gymnosporangium Rusts
Gymnosporangium rusts, such as Cedar Apple Rust, need both junipers and woody plants in the rose family to complete their life cycle. Learn more in this factsheet.
Supporting Native Bees: Our Essential Pollinators
This free publication describes the importance of bees in pollinating major food crops, how to attract and support native pollinators, and how to construct, place, and maintain nests.
