SORT BY TREE HOST - ONLY HEALTH AGENTS COVERED IN THIS MODULE

Generalized pests not necessarily listed under individual species.
Pests listed under hosts where they're most common, but not necessarily exclusive to that host.

INSECTS
Hardwoods in general: leaf galls, leafminers, loopers, cankerworms, skeletonizers, tussock moths, ambrosia beetles, bark beetles, carpenter worm, horntails, powder-post beetles, aphids/adelgids, scales, white grubs, ants,
Apples: ETC, GM, cankerworms, skeletonizers, tussock moths,
Ashes: fall webworm, GM, cankerworms, EAB,
Aspens: FTC, large aspen tortrix, leafminers, mourning cloak, tussock moths, aphids,
Balm: large aspen tortrix
Basswood: loopers, cankerworms, tussock moths,
Beech: cankerworms,
Birches: GM, leafminers, skeletonizers, tussock moths, bronze birch borer,
Paper Birch: large aspen tortrix, leafminers, skeletonizers, tussock moths, bronze birch borer,
Cherries: ETC, leafminers, cankerworms, tussock moths, ugly nest caterpillar, walkingsticks,
Elms: loopers, cankerworms, mourning cloak, tussock moths, carpenter worm, oak twig pruner,
Hackberry: leaf galls, tussock moths,
Hawthorne: skeletonizers,
Juneberries: ETC, leafminers, tussock moths,
Maples: FTC, leaf galls, leafminers, cankerworms, tussock moths, Asian longhorned beetle,
Sugar maple: FTC, leaf galls, leafminers, cankerworms, tussock moths, Asian longhorned beetle, sugar maple borer, maple petiole borer,
Oaks: fall webworm, GM, leaf galls, loopers, cankerworms, orange-striped oakworm, skeletonizers, tussock moths, ugly nest caterpillar, walkingsticks, carpenter worm, red oak borer, two-lined chestnut borer, oak twig pruner,
Willows: large aspen tortrix, leaf galls, mourning cloak, tussock moths, aphids,

INSECTS
Softwoods in general: tussock moths, engraver/bark beetles, horntails, longhorned/sawyer beetles, scales, shoot beetles, shoot moths, spider mites, aphids, spittlebugs,
Balsam fir: spruce budworm, balsam woolly adelgid,
Hemlock: hemlock borer, hemlock woolly adelgid,
Jack pine: jack pine budworm,
Larch: larch casebearer,
Pines: sawflies, pine root collar weevil, aphids & spittlebugs, Pales weevil, shoot beetles, Eur. pine shoot beetle, shoot moths,
Red pine: pine root collar weevil, Eur. pine shoot moth,
Scots pine: pine root collar weevil, Eur. pine shoot moth,
White pine: white pine weevil,
Spruces: needle galls, spruce budworm, spider mites, eastern spruce gall adelgid,
Tamarack: larch casebearer,

DISEASES
Hardwoods in general: Anthracnoses, wilts, diebacks, declines, Armillaria, trunk rots,
Ashes: ash dieback,
Aspens: Septoria canker, aspen shoot blight, Hypoxylon canker,
Balm: Anthracnose, Septoria canker, aspen shoot blight,
Beech: beech bark disease,
Butternut: butternut canker,
Cherries: black knot,
Elms: Dutch elm disease,
Hickories: hickory decline,
Juneberries: black knot,
Maples: Anthracnose, maple tar spot, Verticillium wilt, Eutypella canker,
Sugar maple: sapstreak, Eutypella canker,
Oaks: Anthracnose, oak wilt, Cylindrocladium root rot,

DISEASES
Softwoods in general: needlecasts, witch's brooms, cankers, trunk rots, Annosum, damping-off disease,
Balsam fir: Lirula, red heart,
Cedar: Phomposis,
Pines: red heart, Annosum, Polypores,
Jack pine: Scleroderris, Cronartium,
Red pine: Coleosporium, Sphaeropsis, Sirococcus, Scleroderris, Annosum,
Scots pine: brownspot, Cyclaneusma, Cronartium,
White pine: white pine blister rust, red heart, Tomentosus,
Spruces: Rhizosphaera, Chrysomyxa, Cytospora, dwarf mistletoe, red heart, Polypores, Tomentosus,
Tamarack: dwarf mistletoe,

OTHER AGENTS
General: burls, deer, garlic mustard, buckthorn, mice, nematodes, pileated woodpeckers, sapsuckers, porcupines, herbicide damage, drought, road salt, lightning, leaf scorch, snow, hail, ice, wildfire,
Apple: frost damage,
Aspens: beavers, leaf scorch,
Ashes: beavers,
Cherries: frost damage,
Conifers: winter injury,
Maples: frost damage, leaf scorch,
Tamarack: porcupines,
White pine: porcupines, road salt,

This site created and maintained by Bill Cook, MSU Extension Forester for the Upper Peninsula of Michigan, now retired.  He continues to respond to suggestions, questions, and corrections. Contact him at cookwi@msu.edu.