Pests, Diseases, Weeds, 

and Disorders

Below are resources that can help you identify pests, diseases, weeds, and disorders affecting your ornamental nursery crops. If you are unable to positively identify a problem or have additional questions on identification or control, please contact our Support & Help center.

• PNW Plant Disease Control

• PNW Insect Management handbook

• PNW Weed Management Handbook

• Christmas Tree Traditions, Production, and Diseases

• Controlling Weeds in Nursery and Landscape Plantings

• Wildlife Damage Management

• Diagnosing Plant Problems - An Analytical Approach

Notes on selected diseases and disorders

(PDF files)

Apple Scab Aspen Leaf Spot Bacterial Canker & Gummosis of Cherry Trees Bronze Birch Borer Black Knot Fungus Cooley Spruce Gall Adelgid Deer Antler Rubbing Deer Browsing Dwarf Mistletoe of Conifers Dutch Elm Disease Fairy Ring Fire Blight Frost Damage Fusarium Root Rot Girdling Roots

Hawthorn Rust Juniper Scales Large Pruning Cuts Oystershell Scale Pink Turf Mold Poplar Rust Powdery Mildew Root Damage Salt Injury Sod Webworm Wetwood in Elms Willow Leaf Galls

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