Tree and Shrub Pests

    Tree and Shrub Pests

    Insects

    Important Pests of Ornamental Aspen Bark Beetles (Dendroctonus valens) Boxelder Leafroller (Archips negundana)
    Brown Marmorated Stink Bug (Halyomorpha halys) Cankerworms (Alsophila pometaria &  Paleacrita vernata) Carpenterworm (Prionoxystus robiniae)
    Elm Bark Beetles and Dutch Elm Disease Eriophyid Mites, bud, blister, gall, and rust mites European Earwig (Forficula auricularia)
    Fall Webworm (Hyphantria cunea) Japanese Beetle (Popillia japonica) Leafhoppers in the Home Garden
    Lilac-Ash Borer (Podosesia syringae) Locust Borer (Megacyllene robiniae) Oystershell Scale (Lepidosaphes ulmi)
    Poplar Borer (Saperda calcarata) Poplar Bud Gall Mite (Eriophyes parapopuli) Soft Scales in Utah

    Diseases

    Anthracnose (Kabatiella apocrypta and Apiognomonia spp.) Aspen Leaf Spot (Marssonina spp.) Cytospora or Perennial Canker (Cytospora spp.)
    Dothistroma Needle Blight (Mycosphaerella pini) Fire Blight (Erwinia amylovora) Herbicide Injury
    Iron Chlorosis Leaf Scorch Needle Blight
    Needle Drop Oak Leaf Blister (Taphrina caerulescense) Oedema
    Other Diseases of Trees, Shrubs, and Vines Phytophthora Root Rot (Phytophthora spp.) Slime Flux
    Verticillium Wilt (Verticillium albo-atrum) Winter Injury

    Image Attribution

    Boxelder Leafroller: USDA Forest Service - Ogden , USDA Forest Service, Bugwood.org
    Brown Marmorated Stink Bug: Susan Ellis, Bugwood.org
    Cankerworms: Pennsylvania Department of Conservation and Natural Resources - Forestry , Bugwood.org
    Carpenterworm: Bob Hammon, Colorado State University, Bugwood.org
    Elm Bark Beetles, Eriophyid Mites, Oystershell Scale, & Poplar Bud Gall Mite: Whitney Cranshaw, Colorado State University, Bugwood.org
    European Earwig & Japanese Beetle: David Cappaert, Bugwood.org
    Fall Webworm: Steven Katovich, USDA Forest Service, Bugwood.org
    Locust Borer: Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org
    Soft Scales: Lacy L. Hyche, Auburn University, Bugwood.org
    Cytospora Canker: William Jacobi, Colorado State University, Bugwood.org
    Fire Blight: Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State University, Bugwood.org
    Herbicide Injury: North Carolina Forest Service , Bugwood.org
    Iron Chlorosis: Cheryl Kaiser, University of Kentucky, Bugwood.org
    Needle Blight: USDA Forest Service - Region 8 - Southern , USDA Forest Service, Bugwood.org
    Needle Drop: Ladd Livingston, Idaho Department of Lands, Bugwood.org
    Other Diseases: Manfred Mielke, USDA Forest Service, Bugwood.org
    Phytophthora Root Rot: H.J. Larsen, Bugwood.org