leafminer, cow parsnip, poison ivy, sumacs, leaf scorch, poison oak, webworms, tomato hornworm, yaupon, stinging nettle, pokeweed, mullein, hackberries, monkshood, jewelweed, juglone, budworm, liriope, marsh marigold, fall webworm, deadly nightshade, oriental bittersweet, bayberry, foxtails, siberian elm, tansy ragwort, henbit, tansy, johnsongrass, toadflax, nightshades, andromeda, snowberry, rhizomatous, highbush cranberry, silky dogwood, cotoneaster, phytophthora, fleabane, hogweed, groundsel, eupatorium, sword fern, swallow wort, wood sorrel, ligustrum, dieffenbachia, hickories, chiggers, photinia, amelanchier, wild parsnip, staghorn sumac, pyracantha, greenfly, oxalis, spiderwort, spider mite, cholla, vinca minor, goldenrods, snakeroot, honeysuckles, red osier dogwood, barberry, pachysandra, asparagus fern, cocklebur, asclepias, pondweed, woolly adelgid, bottlebrush, elodea, flowering shrub, nutgrass, bush honeysuckle, blackfly, ambrosia beetle, meadowsweet, chlorotic, bunchberry, repens, tent caterpillar, sunscald, itch mite, euonymous, mildews, croton, sago palm, goutweed, epiphytes, anthracnose, sweet clover, poison hemlock, kudzu vine, serviceberry, cistus, teasel, bay laurel, deciduous holly, bagworm, chickweed

poisonous plant

poison ash, poison dogwood, rhus vernix, toxicodendron vernix