What Plants Are Dangerous for Cats?Cat lovers beware! There are thousands of plants that are toxic to cats. Here are a few common household and landscaping plants that are most likely to be in your home and yard.FirstVet is the #1 online video veterinary service.FirstVet offers video calls with experienced veterinarians for just $35. You can get a consultation within minutes by downloading the FirstVet app for free from the Apple App Store or Google Play Store. Over 500,000 users trust FirstVet to care for their animals. Rating: 4.9 - more than 1600 reviewsRating: 4.9 - more than 1300 reviewsRating: 4.9 - more than 1600 reviews Download app If you suspect your cat has eaten any of the following, or a plant that you cannot identify, contact a veterinarian immediately. Contact Poison Controland be sure to bring a sample or photo of the plant with you to your veterinarian/animal ER.1. Lillies (Liliaceae family)Not all lilies are poisonous to catsThe most dangerous to cats are: Asiatic lilies, Easter lilies, Japanese show lilies, rubrum lilies, stargazer lilies, red lilies, tiger lilies, Western lilies, wood lilies, and dayliliesCalcium oxalate crystals (soluble), all parts of plant toxicKidney failure2. Narcissus/Daffodils (most plants from the genus Narcissus)a.k.a. “Jonquil”, “Paper White”Lycorine, all parts of plant toxic, bulbs most toxicHypersalivation, vomiting, diarrhea, abdominal pain; some cats may have heart arrhythmias, hypotension (low blood pressure), respiratory distress, convulsions3. Autumn Crocus (Colchicum autumnale)a.k.a. “Meadow Saffron”, “Naked Lady”Alkaloid colchicine, highly toxicOnset of symptoms soon after ingestion or days laterHypersalivation, vomiting, bloody diarrhea, respiratory distress, seizures, kidney and liver damage, death4. Azaleas & Rhododendrons (Rhododendron spp.)Grayanotoxins, all parts of the plant are toxicMany species, all moderate to severe toxicityHypersalivation, vomiting, diarrhea, inappetence, heart arrhythmias, weakness, tremors, blindness (transient), seizures, coma, death5. Dieffenbachia (Dieffenbachia spp.)a.k.a. “Charming Dieffenbachia”, “Dumb Cane”, “Exotica Perfection”, “Giant Dumb Cane”, “Gold Dieffenbachia”, “Spotted Dumb Cane”, “Tropic Snow”, “Variable DieffenbachiaCalcium oxalate crystals (insoluble)Oral irritation, burning feeling in the mouth, hypersalivation, vomiting, difficulty swallowing, extreme discomfort6. Cyclamen (Cyclamen spp.)a.k.a. “Persian Violet”, “Sowbread”Saponins, all parts of plant toxic, tubers and roots most toxicHypersalivation, vomiting, diarrhea; large amounts ingested may cause heart arrhythmias, abnormal heart rate, seizures, death7. Tulips (Tulipa spp.) & Hyacinths (Hyacinthus orientalis)Liliaceae familyTulips: Tulipalin A and Tulipalin B; Hyacinths: possible Narcissus-like alkaloids; all parts of plant toxic, bulbs most toxicHypersalivation, vomiting, diarrhea, depression tremors8. Oleander (Nerium oleander)a.k.a. “White Oleander”, “Rose-Bay”Cardiac glycosides, all parts of plant toxicHeart damage, hypersalivation, vomiting, diarrhea, incoordination, tremors, seizures, fatal heart abnormalities9. Kalanchoe (Kalanchoe spp.)a.k.a. “Mother-In-Law Plant”, “Devil’s Backbone”, “Mother-of-Millions”, “Chandelier Plant”Bufadienolides, all parts of plant toxicHypersalivation, vomiting, diarrhea; large amounts ingested may cause heart arrhythmias, collapse, seizures10. Sago Palm (Cycas revoluta)a.k.a. “Coonite Palm”, “Cardboard Palm”, “Cycads”, “Zamias”Cycasin, all parts of plant toxic, seeds most toxicVomiting, diarrhea, black tarry stool, bruising, increased thirst, lethargy, liver failure, death11. Marijuana (Cannabis sativa)a.k.a. “Indian Hemp”, “Hashish”Delta-9-THC (tetrahydrocannabinol)Clinical signs can develop within minutes to hoursMany cats are poisoned by eating food laced with marijuana or legal ediblesDepression/sleepiness or sometimes excitation/hyperactivity, incoordination, dilated pupils, glassy eyes, hypotension (low blood pressure), hypersalivation, dribbling urine, vomiting, decrease in body temperature, vocalization, seizures, comaFor a very comprehensive list of plants that are toxic to cats (photos included), see:ASPCA: Toxic & Non-Toxic PlantsRead more:Everything You Need to Know About Chocolate Toxicity in PetsCan My Pet Eat Grapes and Raisins? The Truth About Grape Toxicity in Dogs and CatsHave more questions about which plants are poisonous to cats?Schedule a video consult to chat with one of our vets.