The original source for this list was a CFA brochure published in 1987. For more poison information go to the National Animal Poison Control Center Information homepage.
To make everything as easy as possible, these are listed in alphabetical order. Not in order of importance.
Alfalfa, Almond (pits of), Alocasia, Amaryllis, Apple seed, Apricot (pits of), Arrowgrass, Avacado, Azalea
Baneberry, Bayonet, Beargrass, Beech, Belladonna, Bird of Paradise, Bittersweet, Black-Eyed Susan, Black Locust, Bleeding Heart, Bloodroot, Bluebonnet, Box, Boxwood, Buckeyes, Burning Bush, Buttercup
Cactus, Candelabra, Caladium, Castor Bean, Cherry (pits of), Cherry (most wild varieties), Cherry (ground), Cherry (laurel), Chinaberry, Christmas Rose, Chrysanthemum, Clematis, Coriaria, Cornflower, Corydalis, Crocus Autumn, Crown of Thorns, Cyclamen.
Daffodil Daphne, Daphne, Darura, Deadly Nightshade, Death Camas, Delphinium, Dicentrea, Diffenbachia, Dumb Cane.
Eggplant, Elderberry, Elephant Ear, English Ivy, Euonymus, Evergreen
Ferns, Flex, Four O’Clock, Foxglove
Golden Chain, Golden Glow, Gopher Purge
Hellerbore, Poison Hemlock, Water Hemlock, Henbane, Holly Honeysuckle, Horsebeans, Horsebrush, Horse Chesnuts, Hyacinth, Hydrangea
Indian Tobasco, Iris, Iris Ivy
Jack in the pulpit, Java Beans, Jessamine, Jeruselum Cherry, Jimson Weed, Jonquil, Jungle Trumpets.
Lantana, Larkspur, Laurel, Lily,Lily Spider, Lilly of the Valley, Locoweed, Lupine
Marigold, Marijuana, Mescal Bean, Mistletoe, Mock Orange, Monkshood, Moonseed, Morning Glory, Mountain Laurel, Mushrooms
Peach (pits of), Peony, Periwinkle, Philodenron, Pimpernel, Poinciana, Poison Hemlock, Poison Ivy, Poison Oak, Pokeweed, Poppy, Potato, Precatory Bean, Common Privet.
Rhododendron, Rhubarb, Rosary Pea, Rubber Plant
Scotch Broom, Skunk Cabbage, Snowdrops, Snow on the Mountain, Staggerweed, Star of Bethlehem, Sweetpea
Tansy Mustard, Tabacco, Tomato, Tulip, Tung Tree
Water Hemlock, Weeping Fig, Wild Call, Wisteria.
Yews (Japanese Yew, English Yew, Western Yew, American Yew).
Do you know other poisonous plants for cats that aren’t on this list? If so leave a comment below and we’ll add it to the list as we want this to be as complete a reference as possible. Thank you for the help!