Tree Specie

Common Pests

Pest Details

(habits, lifecycles, etc.)
Alder Woolly alder aphid VIEW PDF
Apple Apple-and-thorn skeletonizer
Eastern tent caterpillar
Apple scab		 VIEW PDF
Arborvitae (see Cedar)
Ash Ash flower gall
Fall webworm		 VIEW PDF
Basswood (see Linden)
Birch Birch leafminer
Birch skeletonizer
Bronze birch borer
Yellownecked caterpillar		 VIEW PDF
Boxelder (Manitoba maple) Boxelder bug
Boxelder twig borer
Boxelder leaf blight		 VIEW PDF
Butternut (see Walnut)
Catalpa Comstock mealybug
Catalpa leafspot
Verticillium wilt		 VIEW PDF
Cedar, eastern white Cedar (Arborvitae) leafminers
Cedar-apple rust (see Juniper rusts)		 VIEW PDF
Cherry (see Peach)
Elm Elm bark beetles
Elm leaf beetle
European fruit lecanium
Spiny elm caterpillar
Dutch elm disease		 VIEW PDF
Euonymus Euonymus scale
Euonymus webworm
Crown gall		 VIEW PDF
Hawthorn Pear sawfly
Hawthorn leaf blight		 VIEW PDF
Honeylocust Honeylocust pod gall VIEW PDF
Horse-Chestnut Whitemarked tussock moth
Horse-Chestnut leaf blotch		 VIEW PDF
Juniper Juniper scale
Juniper webworm
Juniper blight
Juniper rusts		 VIEW PDF
Larch Larch casebearer
Larch sawfly		 VIEW PDF
Lilac Lilac borer
Lilac leafminer
Oystershell scale
Powdery mildew		 VIEW PDF
Linden Cankerworms
June beetles
Linden looper		 VIEW PDF
Locust Locust borer
Locust leafminer
Locust twig borer		 VIEW PDF
Maple Cottony maple scale
Maple gall mites
Maple leafcutter
Maple trumpet skeletonizer
Norway maple aphid
Saddled prominent
Anthracnose
Dieback of hardwoods
Nectria canker		 VIEW PDF

(see Boxelder for Manitboa maple)
Mockorange Mockorange leafminer VIEW PDF
Mountain Ash Mountain ash sawfly
Pearleaf blister mite
Rose chafer
Fire blight		 VIEW PDF
Oak Gypsy moth
Oak galls
Oak lace bug
Oak leafshredder
Oak skeletonizer
Twig pruner
Armillaria root rot		 VIEW PDF
Peach, Plum, Cherry Lesser peachtree borer
Peachtree borer
Black knot		 VIEW PDF
Pine Eastern pine shoot borer
European pine sawfly
European pine shoot moth
Jack pine budworm
Northern
Pine weevil
Pales weevil
Pine root collar weevil
White pine weevil, Pine bark adelgid [aphid]
Pine engraver, Pine needle scale
Pine spittlebug
Pine tortoise scale
Redheaded pine sawfly
Other pine sawflie
Zimmerman pine moth
Diplodia tip blight
Fomes root rot
Scleroderris canker
Sweetfern blister rust
White pine blister rust
Winter browning		 VIEW PDF
Plum (see Peach)
Poplar Forest tent caterpillar
Poplar petiolegall aphid
Poplar sawfly
Poplar vagabond aphid
European poplar canker
Hypoxylon canker		 VIEW PDF
Spruce Cooley spruce gall adelgid [aphid]
Eastern spruce gall adelgid [aphid]
Spruce bud scale
Spruce budworm
Spruce needleminer
Spruce spider mite
Yellowheaded spruce sawfly
Other spruce sawflies
Spruce canker		 VIEW PDF
Walnut Walnut caterpillar
Yellow leaf blotch		 VIEW PDF
Willow Giant bark aphid
Imported willow leaf beetle
Poplar-and-willow borer		 VIEW PDF
Yew Black vine weevil VIEW PDF