# Are Succulents Harmful to Cats? Gasteria and Crassula Are succulents harmful to cats? It depends on the plant. Gasteria and Crassula (jade plant) are generally considered non-toxic to cats, but several other popular succulents, including Kalanchoe and certain Euphorbia species, can cause serious illness. The safest approach is to identify every plant in your home by its scientific name before your cat has a chance to chew on it. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Gasteria is not listed as toxic to cats, so it is a reasonable choice for a cat-friendly plant collection. - Crassula (jade plant) is also generally considered non-toxic to cats, though eating any plant can cause mild stomach upset. - Kalanchoe is toxic and appears on published lists of poisonous plants for pets [1]. - Lilies are far more dangerous than any succulent. True lilies such as tiger, day, Asiatic, Easter, and roselilies can cause severe kidney failure in cats after eating just a few petals or leaves [2][1]. - If your cat eats a plant and you are not sure what it was, call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Do not induce vomiting unless a veterinarian tells you to. ## Are Succulents Harmful to Cats? The Short Version Succulents are a huge group of plants, and "succulent" is a description of how a plant stores water, not a family tree. That means toxicity varies widely from one species to the next. Some succulents are harmless. Others contain compounds that irritate the mouth or cause vomiting and diarrhea. Two names come up often in this conversation. Gasteria is a small rosette-forming succulent with thick, tongue-shaped leaves. Crassula is a large genus that includes the jade plant, a common houseplant with rounded, glossy leaves. Neither appears on the Pet Poison Helpline list of toxic plants for dogs and cats [2][1]. That list does include Kalanchoe, which is a succulent and a common gift plant [1]. If you want a broader look at which plants cause problems in cats, see [Plants Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/plants-toxic-to-cats) and [House Plants Toxic To Cat](/knowledge/veterinary-medicine/toxicology-and-food-safety/house-plants-toxic-to-cat). ### Is Succulent Gasteria Toxic to Cats? Gasteria is not listed as toxic to cats [2][1]. It is closely related to haworthia and aloe, and it is the aloe family connection that makes some owners nervous. Aloe is not the same plant as gasteria, and the two should not be treated as interchangeable when you are checking safety. Even a non-toxic plant can cause a mild upset stomach if a cat eats a lot of it. Plant material is not part of a cat's normal diet, and some cats vomit after chewing on leaves simply because the fiber irritates the stomach. That is different from poisoning. ### Is Succulent Crassula Toxic to Cats? Crassula is also not listed as toxic to cats [2][1]. Jade plant, the best-known Crassula, is widely grown indoors and is often recommended as a cat-safe option. One caution applies here. Jade plant leaves are firm and can be a choking hazard if a cat tries to swallow a whole leaf. Watch for gagging, retching, or pawing at the mouth after any plant chewing, even with a plant considered safe. ## Which Succulents Are Toxic to Cats? Kalanchoe is the standout toxic succulent. It appears on the Pet Poison Helpline list of plants toxic to dogs and cats [1]. Kalanchoe blooms in bright clusters of red, pink, yellow, or orange, which makes it attractive on a windowsill and attractive to a bored indoor cat. Other succulents that deserve caution include Euphorbia species such as pencil cactus and crown of thorns. Their milky sap is irritating to skin and mouth. If you are unsure about a plant, assume it could be a problem until you confirm its identity. ### Plant Parts and Products That Matter For most toxic plants, the leaves, stems, flowers, and roots all contain the offending compound. Bulbs are a special concern in plants like tulips and hyacinths, where bulb consumption can cause mouth and esophageal irritation along with drooling, vomiting, and diarrhea [1]. Potting soil is usually not toxic by itself, but fertilizer spikes, systemic pesticides, and slow-release granules can be. If your cat digs in a pot and then grooms its paws, it can swallow those products. Keep the plant label so you can tell your veterinarian exactly what was in the pot. ## The Toxic Principle and What It Does in the Body Different plants poison cats in different ways, and the mechanism shapes the symptoms you see. Some plants contain insoluble oxalate crystals. Peace lilies and calla lilies are examples. These crystals irritate the mouth, tongue, pharynx, and esophagus, which leads to drooling and mouth pain [2][1]. The crystals are not absorbed into the bloodstream in a meaningful way, so the damage stays local. True lilies work differently. Tiger, day, Asiatic, Easter, and roselilies are highly toxic to cats, and eating even a few petals or leaves can cause severe kidney failure [2][1]. The exact toxin is still debated, but the outcome is well documented, and it is why lilies are treated as an emergency in cats. Kalanchoe contains cardiac glycosides, compounds that affect the heart and digestive tract. The Pet Poison Helpline lists Kalanchoe among poisonous plants for pets [1]. Symptoms can include vomiting, diarrhea, and changes in heart rhythm. Calcium oxalate is also relevant to cats in a different context. Cats can form calcium oxalate stones in the urinary tract, and research has looked at urine chemistry in cats with calcium oxalate uroliths and renal disease to identify metabolic differences between groups [3]. That is a urinary disease process, not plant poisoning, but it explains why oxalate is a word cat owners see often. ## Signs of Plant Poisoning in Cats and Their Timeline Signs depend on the plant and how much was eaten. With irritating plants like peace lilies and calla lilies, drooling and mouth discomfort often start within minutes to a couple of hours [2][1]. Your cat may paw at its mouth, refuse food, or vomit. With Kalanchoe, vomiting and diarrhea are common, and heart rhythm changes can develop over hours [1]. With true lilies, a cat may seem fine at first and then develop signs of kidney injury over one to three days. That delay is what makes lily exposure so dangerous. If you even suspect your cat ate a lily, call for help immediately instead of waiting for symptoms [1]. General warning signs to watch for after any plant exposure include: - Drooling, lip smacking, or pawing at the mouth - Vomiting or diarrhea - Loss of appetite - Lethargy or weakness - Tremors, wobbling, or collapse - Changes in breathing or heart rate - Increased thirst and urination, which can signal kidney trouble ## What to Do Right Now If you saw your cat eat a plant, act quickly. 1. Move your cat away from the plant and remove any plant material from its mouth if you can do so safely. 2. Identify the plant. Take a photo, or bring a leaf or the plant tag with you. 3. Call your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. 4. Do not induce vomiting unless a veterinarian tells you to. Making a cat vomit at home can cause aspiration, where vomit enters the lungs, and it can be dangerous with certain plants. 5. Do not give food, milk, oil, or home remedies unless a veterinarian instructs you to. 6. Note the time of exposure and any symptoms, and bring that timeline with you. If your cat is having trouble breathing, collapsing, having seizures, or is unresponsive, go to the nearest emergency veterinary hospital now. ## Veterinary Treatment for Plant Poisoning in Cats Treatment depends on the plant and the symptoms. For mouth irritation from oxalate crystals, your veterinarian may flush the mouth and give medications to coat the irritated tissue and control pain [2][1]. For vomiting and diarrhea, treatment often includes fluids, anti-nausea medication, and stomach protectors. Supportive care is the mainstay for tulip and hyacinth bulb exposure, which can cause drooling, vomiting, and diarrhea [1]. For serious exposures like true lilies, treatment focuses on aggressive intravenous fluids to support the kidneys and repeated blood work to track kidney values [2][1]. Some cats need hospitalization for several days. Your veterinarian calculates every medication dose from your cat's weight and health status. There is no home dose you should use on your own. ## Outlook After Exposure The outlook is best when treatment starts early. For mild mouth irritation from plants like peace lilies, most cats recover well with supportive care [2][1]. For bulb ingestion from tulips or hyacinths, pets can recover with supportive care from medical professionals [1]. For true lily exposure, the outcome depends heavily on how quickly treatment begins and how much was eaten, and some cats develop permanent kidney damage [2][1]. If your cat ate a succulent that is not on a toxic list, the expected outcome is usually good. Watch for vomiting or diarrhea for 24 hours and call your veterinarian if anything seems off. ## Prevention and Safer Alternatives The simplest prevention is to know what you own. Keep the original plant tag or write the scientific name on a label stuck in the pot. Common names overlap, and "succulent" tells your veterinarian almost nothing. Place plants where your cat cannot reach them. Hanging planters, closed plant cabinets, and rooms your cat does not enter all work. Cats climb, so a high shelf is not always enough. Choose plants that are not on toxic plant lists. Gasteria and Crassula are reasonable choices [2][1]. Spider plant, Boston fern, and most true palms are also commonly kept in cat households. Avoid Kalanchoe, Euphorbia species, and any plant you cannot identify [1]. If you are building a plant collection from scratch, [What Kind Of Plants Are Harmful To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-kind-of-plants-are-harmful-to-cats) and [What Plants Can Be Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-can-be-toxic-to-cats) are useful starting points. Offer your cat safe alternatives to chew. Cat grass, catnip, and silver vine give your cat something to nibble that is not your houseplants. More chewing outlets often mean less plant damage. ## Limitations and When to Contact a Veterinarian No article can tell you what will happen to your specific cat. The amount eaten, the plant's growing conditions, your cat's age, and any underlying kidney or heart disease all change the picture. Individual cases need a veterinarian who can examine your cat and run tests. Contact your veterinarian the same day if your cat ate a plant you cannot identify, is drooling or vomiting, or has eaten any part of a plant on a toxic list. Go to an emergency hospital now if your cat ate any part of a true lily, is having trouble breathing, is collapsing, has seizures, or is unresponsive [2][1]. Schedule a routine visit if your cat has chewed plants repeatedly, has mild intermittent vomiting, or you want help choosing safe plants for your home. ## Frequently Asked Questions ### Are succulents harmful to cats in general? Most succulents are not dangerous, but the group includes both safe and toxic plants, so you have to check each species. Gasteria and Crassula are generally considered safe, while Kalanchoe is toxic [2][1]. Never assume a plant is safe just because it is sold as a succulent. ### Can my cat get sick from eating a jade plant? Jade plant (Crassula) is not listed as toxic to cats, so serious poisoning is unlikely [2][1]. A cat that eats a large amount may still vomit or have loose stool from the plant fiber. Call your veterinarian if vomiting lasts more than a few hours or your cat stops eating. ### What should I do if I do not know which succulent my cat ate? Call your veterinarian or a poison control line and describe the plant as best you can. Take a photo of the whole plant, including leaves, stems, and flowers, and bring a cutting with you if you go in. Do not wait for symptoms before you call. ### Is Kalanchoe really dangerous to cats? Yes, Kalanchoe appears on published lists of plants toxic to dogs and cats [1]. It can cause vomiting, diarrhea, and heart rhythm changes. Keep it out of reach, and call for advice right away if your cat chews on it. ### Are there cat-safe succulents I can keep at home? Gasteria and Crassula are two options that are not listed as toxic to cats [2][1]. Haworthia is another commonly kept small succulent that is generally considered safe. Even with safe plants, place them where your cat cannot knock them over or dig in the soil. ## Related Articles - [What Kind Of Plants Are Harmful To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-kind-of-plants-are-harmful-to-cats) - [Plants Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/plants-toxic-to-cats) - [House Plants Toxic To Cat](/knowledge/veterinary-medicine/toxicology-and-food-safety/house-plants-toxic-to-cat) - [What Plants Can Be Toxic To Cats](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-can-be-toxic-to-cats) - [Houseplants Toxic To Cats Reddit](/knowledge/veterinary-medicine/toxicology-and-food-safety/houseplants-toxic-to-cats-reddit) - [What Plants Are Toxic To Cats Indoor](/knowledge/veterinary-medicine/toxicology-and-food-safety/what-plants-are-toxic-to-cats-indoor) - [Are Jade Plants Toxic to Cats? Crassula Safety Facts](/knowledge/veterinary-medicine/toxicology-and-food-safety/jade-plant-toxic-to-cats) - [Is Haworthia Succulent Toxic to Cats? Safety Facts](/knowledge/veterinary-medicine/toxicology-and-food-safety/haworthia-succulent-toxic-cats) - [Is Echeveria Succulent Toxic to Cats? Safety Facts](/knowledge/veterinary-medicine/toxicology-and-food-safety/echeveria-succulent-toxic-cats) ## References 1. [List of Plants Toxic to Dogs and Cats](https://www.petpoisonhelpline.com/uncategorized/list-of-plants-toxic-to-dogs-and-cats/). Pet Poison Helpline. 2. [List of Plants Toxic for Dogs and](https://www.petpoisonhelpline.com/uncategorized/list-of-plants-toxic-for-dogs-and-cats/). Pet Poison Helpline. 3. [Urine metabolomic changes in cats with renal disease or calcium oxalate uroliths](https://pubmed.ncbi.nlm.nih.gov/40824970/). PloS one, 2025. ## Further Reading - [ASPCA Animal Poison Control Center](https://www.aspca.org/pet-care/animal-poison-control) - [ASPCA: People Foods to Avoid Feeding Your Pets](https://www.aspca.org/pet-care/aspca-poison-control/people-foods-avoid-feeding-your-pets) - [U.S. Food and Drug Administration: Potentially Dangerous Items for Your Pet](https://www.fda.gov/animal-veterinary/animal-health-literacy/potentially-dangerous-items-your-pet)