Kaffir Lily, Clivia miniata
Kentucky coffee tree, Gymnocladus dioicus
Lablab, Dolichos lablab (Lablab purpureus)
Lady slipper orchid, Cypripedium spp.
Lambkill, Kalmia angustifolia, K. carolina
Lantana, Lantana camara
Larkspur, Delphinium spp.
Laurel-cherry, Prunus laurocerasus
Leadwort, Plumbago spp.
Leatherwood, Dirca palustris
Lemon scented gum, Eucalyptus spp.
Lemon-Yellow-Lepiota, Leucocoprinus birnbaumii
Lenten rose, Helleborus orientalis
Leopard's-bane, Arnica montana
Ligustrum, Ligustrum japonicum, L. sinense, L. lucidum, L. vulgare
Lilac daphne, Daphne genkwa
Lily of the Incas, Alstroemeria spp.
Lily turf, Liriope spp.
Lily-of-the-valley bush, Pieris japonica
Lily-of-the-valley, Convallaria majalis
Lima Bean, Phaseolus lunatus
Live-forever, Sedum purpureum
Live-forever, Sempervivum spp.
Lobelia, Lobelia spp.
Loquat, Eriobotrya japonica
Lords-and-Ladies, Arum maculatum
Lucky clover, Oxalis spp.
Lupine, Lupinus spp.
Madagascar Periwinkle, Catharanthus roseus
Madeira Ivy, Hedera canariensis
Magic Lily, Lycoris squamigera
Maidenhair tree, Ginkgo biloba
Maleberry, Lyonia spp.
Mandarin, Disporum spp.
Mandarin, Streptopus spp.
Mandevilla, Mandevilla spp.
Mandrake, Podophyllum peltatum
Manioc, Manihot esculenta
Many Warts, Amanita polypyramis
Marigold, Tagetes spp.
Marijuana, Cannabis sativa
Marsh marigold, Caltha palustris
Marvel-of-Peru, Mirabilis jalapa
Matrimony vine, Lycium spp.
Mayapple, Podophyllum peltatum
Meadow Garlic, Allium spp.
Meadow saffron, Colchicum autumnale
Medicinal Aloe, Aloe vera
Mescal Bean, Sophora secundiflora
Mescal buttons, Lophophora williamsii
Mescal, Lophophora williamsii
Metel, Datura metel
Mexican Pricklepoppy, Argemone mexicana
Mexican tea, Chenopodium ambrosioides
Milfoil, Achillea millefolium
Milkbush, Euphorbia tirucalli
Milkweed, Asclepias spp.
Milkweed, Asclepias tuberosa
Milkweed Common , Asclepias syriaca
Mistletoe, Phoradendron leucarpum (P. serotinum)
Mitsu-ba, Cryptotaenia japonica
Mole plant, Euphorbia lathyris
Monkshood, Aconitum spp.
Morning glory, Ipomoea tricolor
Moses-in-the-cradle, Rhoeo spathacea
Mother-in-law's tongue, Sansevieria trifasciata
Mountain andromeda, Pieris floribunda
Mountain fetter-bush, Pieris floribunda
Mountain Hydrangea, Hydrangea spp.
Mountain laurel, Kalmia latifolia
Mountain snuff, Arnica montana
Mountain tobacco, Arnica montana
Mum, Chrysanthemum X morifolium (Dendranthema X grandiflorum)
Naked Brimcap, Paxillus involutus
Naked ladies, Colchicum autumnale
Nandina, Nandina domestica
Narcissus, Narcissus spp.
Nephthytis, Syngonium podophyllum
Night blooming Jessamine, Cestrum spp.
Nightshade, Solanum americanum
Oak, Quercus spp.
Oak-leaf Hydrangea, Hydrangea spp.
Ohio Buckeye, Aesculus glabra
Oleander, Nerium oleander
Opium Poppy, Papaver somniferum
Ornithogalum, Ornithogalum spp.
Orpine, Sedum purpureum
Oyster plant, Rhoeo spathacea

"Poisonous Plants of North Carolina," Dr. Alice B. Russell, Department of Horticultural Science; Dr. James W. Hardin, Botany; Dr. Larry Grand, Plant Pathology; and Dr. Angela Fraser, Family and Consumer Sciences; North Carolina State University. All Pictures Copyright @1997Alice B. Russell, James W. Hardin, Larry Grand. Computer programming, Miguel A. Buendia; graphics, Brad Capel.

Disclaimer: The list of poisonous plants on this web site does not necessarily include every poisonous plant that is known, or that might be found in an urban landscape or home. North Carolina State University does not advise eating any of the plants included in this web site. The information concerning edibility is taken from the literature, and the degree of reliability is unknown. We discourage the use of any of these plants for self medication. In cases of accidental exposure or ingestion, contact the Poison Control Center 1-800-222-1222.