I ran across this on the internet today and thought it might be usefull. There is also one for dogs, that I posted on 'dogs general'
"Plants poisonous to Cats"
Please note that this list of poisonous plants is not a complete list. The plants listed are the more common plants that are poisonous to cats. While some of these plants only give cats symptoms of irritation, please be aware that different cats and the amount of the plant that is ingested effects how toxic the particular plant can be. Always take your cat to the vet immediately if you believe your cat has ingested a plant that might be poisonous.
Plant
Toxic portion of Plant
Symptoms of Poisoning
Aloe Vera All parts Diarrhea
Amaryllis Bulbs Upset stomach, hyperactivity, lethargy, coma, shock, death
Apple Seeds rapid breathing, shock, dilated pupils, gum inflammation
Apricot Seeds, pits Varied toxic effect
Asparagus Fern Most parts Vomiting, abdominal pain, cramps, tremors, heart, respiratory, kidney failure
Autumn Crocus Bulbs Oral irritation, upset stomach, kidney failure, hyperactivity, lethargy, coma, shock, death
Avocado Fruit and pit Diarrhea, vomiting, labored breathing, death
Azalea All parts weakness, upset stomach, heart failure, depression
Baby's breath All parts Varied toxic effects
Baneberry Berries, roots, foliage Varied toxic effects
Bird of Paradise All parts Varied toxic effects
Bittersweet Berries Varied toxic effects
Bleeding Heart Foliage, roots Varied toxic effects
Boxwood All parts Upset stomach, excitability, lethargy
Branching Ivy All parts Varied toxic effects
Buckeyes All parts Varied toxic effects
Buddhist Pine All parts Varied toxic effects
Buttercup All top growth Upset, stomach, varied effects
Caladium Leaf, stem, stalk, bulbs Upset stomach, oral irritation, asphyxiation, tremors, seizures, loss of balance, death
Calla Lily Bulb Upset stomach, oral irritation, tremors, seizures, loss of balance, death
Castor bean Seed and seed pulp Death
Ceriman All parts Varied toxic effects
Charming Dieffenbachia All parts Varied toxic effects
Cherry (All types and forms) All parts Shock, gum inflammation, dilated pupils, rapid breathing, death
Chinese evergreen All parts Varied toxic effects
Christmas Rose All parts Upset stomach, diarrhea, seizures, disorientation
Chrysanthemum All parts Skin irritation
Cineria All parts Varied toxic effects
Clematis All parts Varied toxic effects
Cordatum All parts Varied toxic effects
Cornflower All parts Varied toxic effects
Cornstalk plant Most parts Upset stomach, labored breathing, other varied effects
Croton All parts Varied toxic effects
Cuban Laurel Most parts Upset stomach, other varied effects
Daffodil Bulbs upset stomach, seizures, weakness, tremors, excitement, lethargy, coma, death
Daphne Bark, leaves, fruit Varied toxic effects
Devil's Ivy Most parts Upset stomach, mouth irritation, tremors, seizures, loss of balance, asphyxiation, death
Dieffenbachia All parts Varied toxic effects
Dracaena Palm All parts Varied toxic effects
Dragon Tree All parts Varied Toxic effects
Dumb Cane All parts Varied toxic effects
Easter Lily All parts Kidney failure, upset stomach, weakness
Eggplant Green growth, sprouts Upset stomach, heart failure, drooling, lethargy
Elaine All parts Varied toxic effects
Elderberry All parts Upset stomach, diarrhea
Elephant ear All parts Varied toxic effects
Emerald feather All parts Varied toxic effects
English Ivy Most parts Upset stomach, hyperactivity, labored breathing, fever, increased thirst, staggering
Fiddle-leaf fig Most parts Upset stomach, skin irritation
Florida beauty All parts Varied toxic effects
Foxglove All parts, especially seeds Upset stomach, tremors, seizures, loss of balance, lethargy, collapse, heart failure, death
Geranium All parts Varied toxic effects
German Ivy All parts Varied toxic effects
Giant Dumb Cane All parts Varied toxic effects
Gold Dieffenbachia All parts Varied toxic effects
Gold Dust Dracaena Bean like capsules, most other parts Excitement, staggering, coma, convulsions, death
Heartland Philodendron All parts Varied toxic effects
Hemlock All parts Varied toxic effects, death
Holly berries Upset stomach, tremors, seizures loss of balance, death
Hurricane Plant Bulbs Varied toxic effects
Hyacinth Bulbs Varied toxic effects, death
Hydrangea All parts Seizures, dizziness, rapid breathing
Indian rubber plant All parts Varied toxic effects
Iris All parts Varied toxic effects
Jack in the pulpit All parts, especially roots Mouth irritation
Japanese show lily All parts Varied Toxic effects, death
Jimson weed All parts increased thirst, lethargy, coma, death
Jonquil All parts Upset stomach, hyperactivity, depressions, coma, seizures, tremors, weakness, irregular heartbeat, death
Lacy Tree philodendron All parts Varied toxic effects
Lantana Unripe greenish blue or black berries Heart, lung, kidney, nervous system failure, death
Larkspur All parts Upset stomach, excitement, depression, death
Lily o the Valley All but ripe fruit Irregular heart rate, upset stomach, lethargy
Madagascar Dragon tree All parts Varied toxic effects
Marijuana All parts Varied toxic effects
Mescal beans All parts Varied toxic effects
Mistletoe berries Varied toxic effects
Morning Glory Most parts Upset stomach, diarrhea, hallucinations
Mushrooms All parts Varied toxic effects
Narcissus Most parts Upset stomach, hyperactivity, depression, seizures, tremors, irregular heartbeat
Nightshade All parts Digestive system failure, varied toxic effects
Oleander All parts Upset stomach, heart failure, excitability, lethargy
Onion All parts Upset stomach, anemia
Oriental Lily All parts Death
Peony roots upset stomach, tremors, seizures, staggering, loss of balance, collapse, heart failure, death
Periwinkle Most parts Hallucinogen
Philodendron Leaves, stems, stalks Swollen mouth, painful tongue, sore lips
Poinsettia All parts, especially seeds Upset stomach, oral irritation, death
Poison Ivy All parts Varied toxic effects
Poison Oak All parts Varied toxic effects
Potato Green growth, sprouts Varied toxic effects
Primrose Most parts Upset stomach
Red Emerald, Princess, Margined Dracaena All parts Varied toxic effects
Rhubarb Leaf blade convulsions, coma, death
Snowdrops Bulbs Varied toxic effects
Snow on the Mountain All parts, especially seeds Varied toxic effects
Sweet pea Seeds, pods Varied Toxic effects
Tiger Lily All parts Death
Tobacco All parts Varied toxic effects
Tomato plant green growth, sprout Varied toxic effects
Tulip Bulbs Varied toxic effects
Virginia Creeper Most parts Varied toxic effects
Wisteria seeds digestive system upset, diarrhea, vomiting, death
Yew (Japanese, English, Western, American) All parts, especially foliage Vomiting, abdominal pain, diarrhea, death
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