dutch elm, elms, chestnut blight, woolly adelgid, blister rust, hogweed, infestation, bark beetle, spruce bark beetle, anthracnose, beetle, buckthorn, potato blight, asian longhorned beetle, cankerworms, budworm, purple loosestrife, knotweed, phytophthora, sclerotinia, ragwort, adelgid, disease, defoliated, dieback, leafy spurge, phylloxera, leaf scorch, fungus, pest, borer, phytophthora infestans, loosestrife, elm tree, horse chestnut, insect, fall webworm, powdery mildew, apple maggot, knapweed, reed canary grass, forest tent caterpillar, aphid, lodgepole pine, sawfly, spartina, parvovirus, downy mildew, witchweed, pollarding, wild parsnip, root rot, leaf beetle, siberian elm, winterkill, ailanthus, late blight, verticillium, conifers, guinea worm disease, hemlocks, weevil, european corn borer, psyllid, canine distemper, poison sumac, zebra mussel, blight, phragmites, ragweed, kochia, flea beetle, sericea lespedeza, webworm, whitefly, bollworm, boll weevil, armillaria, crown vetch, pythium, ambrosia beetle, bur oak, ebola virus, chestnut tree, mealy bug, skeeter, yellowjacket, bubonic plague, smallpox, spider mite, stem canker, lyme disease, bagworm, hessian fly, sycamore, musk thistle, honey locust, sea lamprey, yellow fever, stink bug, dutch elm fungus

plant disease