Pests Listed By Host
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APPLE/CRABAPPLE (Malus)
Aphids | Fire Blight |
Apple Scab | Forest Tent Caterpillars |
Blister Mites | Nectria Canker |
Cedar-Apple Rust | Oystershell Scale |
Cedar-Hawthorn Rust | Pear Sawfly or Pearslug |
Codling Moth | Powdery Mildew |
Cytospora Canker | Two-Spotted Spider Mite |
ARBORVITAE (Thuja)
Aphids | Spruce Spider Mite |
Phomopsis Tip Blight |
ASH (Fraxinus)
BIRCH (Betula)
Aphids | Cytospora Canker |
Bronze Birch Borer | Two-Spotted Spider Mite |
BOXELDER (Acer)
Cottony Maple Scale | Eriophyid Mites |
Bacterial Wetwood | Powdery Mildew |
BUR OAK (Quercus)
Anthracnose | Powdery Mildew |
Oak Leaf Blister | Rough Bulletgall Wasp |
CHERRY/PLUM (Prunus)
Aphids | Eriophyid Mites |
Black Knot | Forest Tent Caterpillars |
Coryneum Blight (Shot Hole Disease) | Pear Sawfly or Pearslug |
Cytospora Canker |
COTONEASTER (Cotoneaster)
Aphids | Oystershell Scale |
Fire Blight | Pear Sawfly or Pearslug |
Nectria Canker |
DOUGLAS-FIR (Pseudotsuga)
Cooley Spruce Gall Adelgid | Rhabdocline Needle Cast |
Cytospora Canker | Rhizosphaera Needle Cast |
Douglas-Fir Tussock Moth | Spruce Bud Scale |
Engraver Beetles | Spruce Spider Mite |
Giant Conifer Aphids | Swiss Needle Cast |
Mountain Pine Beetle | Western Spruce Budworm |
Pine Needle Scale |
ELM (Ulmus)
Aphids | Dutch Elm Disease |
Bacterial Wetwood/Slime Flux | Eriophyid Mites |
Cytospora Canker | European Elm Scale |
FIR (Abies)
Cooley Spruce Gall Adelgid | Pine Needle Scale |
Cytospora Canker | Rhizosphaera Needle Cast |
Douglas-fir Tussock Moth | Spruce Spider Mite |
Engraver Beetles | Spruce Bud Scale |
Giant Conifer Aphids | Western Spruce Budworm |
Mountain Pine Beetle |
GRAPE (Vitis)
Aphids | Powdery Mildew |
Leafhoppers | Root Weevils |
HACKBERRY (Celtis)
Aphids | Eriophyid Mites |
Cottony Maple Scale |
HAWTHORN (Crataegus)
Aphids | Fire Blight |
Cedar-Hawthorn Rust |
HONEYLOCUST (Gleditisia)
Bacterial Wetwood/Slime-flux | Eriophyid Mites |
Cottony Maple Scale | Nectria Canker |
Cytospora Canker |
JUNIPER (Juniperus)
Cedar-Apple Rust | Kabatina Tip Blight |
Cedar-Hawthorn Rust | Phomopsis Tip Blight |
Giant Conifer Aphids | Spruce Spider Mite |
LILAC (Syringa)
Bacterial Blight of Lilac | Powdery Mildew |
Eriophyid Mites | Root Weevils |
Oystershell Scale |
LINDEN (Tilia)
Aphids | Cytospora Canker |
Bacterial Wetwood/Slime-flux | Nectria Canker |
Cottony Maple Scale |
MAPLE (Acer)
Anthracnose | Cytospora Canker |
Aphids | Eriophyid Mites |
Bacterial Wetwood/Slime-flux | Leafhoppers |
Cottony Maple Scale | Nectria canker |
MOUNTAIN-ASH (Sorbus)
Aphids | Fire Blight |
Cytospora Canker | Nectria Canker |
Eriophyid Mites |
PEAR (Pyrus)
Aphids | Fire Blight |
Blister Mites | Forest Tent Caterpillars |
Cedar-Hawthorn Rust | Nectria Canker |
Codling Moth | Oystershell Scale |
Cytospora Canker | Pear Sawfly or Pearslug |
Eriophyid Mites | Two-Spotted Spider Mite |
PINE (Pinus)
Diplodia Tip Blight | Pine Needle Scale |
Dothistroma Needle Blight | Rhizosphaera Needle Cast |
Giant Conifer Aphids | Spruce Spider Mite |
Engraver Beetles | Western Gall Rust |
Eriophyid Mites | White Pine Weevil |
Mountain Pine Beetle |
POPLAR/ASPEN/COTTONWOOD (Populus)
Aphids | Forest Tent Caterpillars |
Aspen Blotch Leafminer | Marssonina Leaf Spot |
Bacterial Wetwood/Slime-flux | Oystershell Scale |
Crown Gall | Poplar Borer |
Cytospora Canker | Powdery Mildew |
Eriophyid Mites | Venturia Leaf and Shoot Blight |
SPRUCE (Picea)
Cooley Spruce Gall Adelgid | Rhizosphaera Needle Cast |
Cytospora Canker | Sudden Needle Drop |
Douglas-Fir Tussock Moth | Spruce Bud Scale |
Engraver Beetles | Spruce Spider Mite |
Eriophyid Mites | Stigmina Needle Cast |
Giant Conifer Aphids | Western Spruce Budworm |
Mountain Pine Beetle | White Pine Weevil |
Pine Needle Scale |
VIRGINIA CREEPER (Parthenocissus)
Aphids | Root Weevils |
Leafhoppers | Powdery Mildew |
WILLOWS (Salix)
Aphids | Oystershell Scale |
Black Canker of Willow | Two-Spotted Spider Mites |
Cytospora Canker | Willow Redgall Sawfly |
Eriophyid Mites | |
Forest Tent Caterpillars | |
Marssonina Leaf Spot |