Host plants and associated pests are arranged alphabetically. Click on "expand all" or the + sign to expand each section.
Apple & Flowering Crabapple (Malus)
Aphids
Calico scale
Cankerworms
Clearwing borers
Eastern tent caterpillar
European fruit lecanium
European red mite
Fall webworm
Flatheaded appletree borer
Gypsy moth
Japanese beetle
Leafhoppers
Oystershell scale
Redhumped caterpillar
Roundheaded appletree borer
Scurfy scale
Twospotted spider mite
Walnut caterpillar
Whitemarked tussock moth
Woolly apple aphid
Yellownecked caterpillar
Arborvitae (Arborvitae)
Barberry (Berberis)
Birch (Betula)
Ambrosia beetle
Aphids
Asian longhorned beetle
Birch leafminer
Bronze birch borer
Clearwing borers
Dusky birch sawfly
Fall webworm
Forest tent caterpillar
Gypsy moth
Japanese beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Redhumped caterpillar
Walnut caterpillar
Whitemarked tussock moth
Yellownecked caterpillar
Bittersweet (Celastrus)
Black Locust (Robinia)
Blueberry (Vaccinium)
Boxwood (Buxus)
Buckeye (see Horsechestnut)
Catalpa (Catalpa)
Cedar (see Juniper)
Clematis (Clematis)
Currant (Ribes)
Douglas-fir (Pseudotsuga)
Elm (Ulmus)
Ambrosia beetle
Aphids
Asian longhorned beetle
Bagworm
Calico scale
Cankerworms
Elm bark beetle, smaller European
Elm bark beetle, native
Elm borer
Elm casebearer
Elm eriophyid mite
Elm leaf beetle
Elm scurfy scale
European elm scale
European red mite
Fall webworm
Flatheaded appletree borer
Forest tent caterpillar
Gloomy scale
Gypsy moth
Japanese beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Redhumped caterpillar
Twig girdler
Twig pruner
Twospotted spider mite
Whitemarked tussock moth
Woolly apple aphid
Yellownecked caterpillar
Euonymous (Euonymous)
Flowering Fruits (Plum, Cherry, Peach, Almond) (Prunus)
Aphids
Cankerworms
Clearwing borers
Eastern tent caterpillar
Eriophyid mites
European fruit lecanium
European red mite
Fall webworm
Forest tent caterpillar
Japanese beetle
Leafhoppers
Oystershell scale
Pear sawfly
Redhumped caterpillar
Twig girdler
Twospotted spider mite
Uglynest caterpillar
Yellownecked caterpillar
Forsythia (Forsythia)
Ground Covers
Hazelnut (Corylus)
Holly (Ilex)
Horsechestnut (Aesculus)
Hydrangea (Hydrangea)
Japanese Flowering Quince (Chaenomeles)
Laurel (Kalmia)
Lilac (Syringa)
Linden (Tilia)
Magnolia (Magnolia)
Maple (Acer)
Ambrosia beetle
Aphids
Asian longhorned beetle
Bagworm
Boxelder bug
Calico scale
Cankerworms
Clearwing borers
Cottony maple scale
Eriophyid mites
European fruit lecanium
Flatheaded appletree borer
Forest tent caterpillar
Fourlined plant bug
Gloomy scale
Japanese beetle
Leafhoppers
Maple bladdergall mite
Maple spindlegall mite
Maple velvet erineum gall mite
Oystershell scale
Twig pruner
Twospotted spider mite
Whitemarked tussock moth
Woolly alder aphid
Yellownecked caterpillar
Mulberry (Morus)
Ninebark (Physocarpus)
Pachysandra (Pachysandra)
Persimmon (Diospyros)
Pine (Pinus)
Ambrosia beetle
Aphids
Bagworm
Balsam twig aphid
Black pineleaf scale
Clearwing borers
Conifer sawflies
Eastern pine shoot borer
European pine sawfly
European pine shoot moth
Gypsy moth
Introduced pine sawfly
Pales weevil
Pine bark adelgid
Pine engraver
Pine needle scale
Pine root collar weevil
Pine shoot beetle
Pine spittlebug
Pine thrips
Pine tortoise scale
Redheaded pine sawfly
Spruce budworm
Spruce spider mite
Strawberry root weevil
White pine aphid
White pine sawfly
White pine weevil
Whitespotted sawyer
Zimmerman pine moth
Poplar (Populus)
Asian longhorned beetle
Bagworm
Clearwing borers
Cottonwood leaf beetle
Eriophyid mites
Fall webworm
Forest tent caterpillar
Gypsy moth
Imported willow leaf beetle
Japanese beetle
Leafhoppers
Linden borer
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Poplar tentmaker
Redhumped caterpillar
Twig girdler
Twospotted spider mite
Whitemarked tussock moth
Privet (Ligustrum)
Pyracantha (Pyracantha)
Rhododendron (Rhododendron)
Rose of Sharon (Hibiscus)
Sassafrass (Sassafrass)
Spirea (Spiraea)
Sweetgum (Liguidambar)
Sycamore / London Plane Tree (Pseudoplatanus)
Tuliptree (Liriodendron)
Viburnum (Viburnum)
Willow (Salix)
Ambrosia beetle
Aphids
Asian longhorned beetle
Clearwing borers
Cottonwood leaf beetle
Fall webworm
Flatheaded appletree borer
Forest tent caterpillar
Imported willow leaf beetle
Leafhoppers
Mourningcloak butterfly
Oystershell scale
Poplar and willow borer
Redhumped caterpillar
Scurfy scale
Tuliptree scale
Walnut caterpillar