You love your houseplants, and your cat loves to investigate everything. Peace lilies (Spathiphyllum) are a popular choice for their elegant white blooms and low maintenance. But if you share your home with a curious cat, you need to know the truth: peace lilies are toxic to cats. They are not the same as true lilies (Lilium or Hemerocallis), which can cause fatal kidney failure, but they still pose a real danger. Here is exactly what you need to know to protect your cat without giving up your love of greenery.
What Makes Peace Lilies Toxic to Cats?
Peace lilies contain insoluble calcium oxalate crystals, also known as raphides. These microscopic, needle-shaped crystals are found in every part of the plant, especially the leaves and stems. When a cat chews on a leaf or stem, the crystals are released into the mouth and throat. They immediately penetrate the soft tissues, causing intense pain, swelling, and irritation. This is a mechanical injury, not a chemical poison, but it is still very unpleasant and can be dangerous if swelling blocks the airway.
Peace lilies are not true lilies at all. True lilies (Lilium and Hemerocallis species) are in a completely different plant family and cause acute kidney failure in cats, even from just licking pollen. Peace lilies belong to the Araceae family, like philodendrons and pothos.
Signs Your Cat Has Chewed a Peace Lily
If your cat takes a bite of a peace lily, you will likely see symptoms within minutes. The most common signs include pawing at the mouth, excessive drooling, head shaking, and vocalizing in distress. Your cat may also vomit, have difficulty swallowing, or show a loss of appetite. The oral pain is often so immediate that the cat will stop eating or drinking. In rare cases, significant swelling in the throat can cause breathing trouble, which is a medical emergency. If you notice any of these signs, do not wait, call your veterinarian or a pet poison helpline right away.
What to Do If Your Cat Eats a Peace Lily
First, stay calm. Remove your cat from the plant and gently rinse its mouth with cool water to flush out any remaining crystals. You can offer a small amount of milk or yogurt to help bind the crystals and soothe the irritation, but only if your cat is conscious and able to swallow. Do not induce vomiting unless your vet specifically tells you to. Then, call your veterinarian or the ASPCA Animal Poison Control Center (888-426-4435). Be ready to tell them what part of the plant was eaten, how much, and when. Most cases resolve with supportive care, but a quick call can prevent complications.
How to Keep Peace Lilies and Cats Together Safely
The safest option is to remove peace lilies from your home entirely, but if you are determined to keep one, you need to be strategic. Place the plant in a room your cat cannot access, on a high shelf, or inside a glass terrarium. Some cats are skilled jumpers, so a hanging planter in a room with a door that stays closed is more reliable. You can also use bitter apple spray on the leaves as a deterrent, but this is not foolproof. If your cat is prone to chewing on plants, consider growing cat grass or catnip as a safe alternative to redirect its attention. A calm cat is less likely to seek out trouble, and a cat calming collar can help reduce stress-related chewing behaviors.
Safe Alternatives to Peace Lilies
If you want a similar look without the risk, there are many beautiful cat-safe houseplants. Spider plants, Boston ferns, parlor palms, and calatheas are all non-toxic and add lush greenery to your space. African violets and orchids are also safe and offer colorful blooms. If you need a plant that tolerates low light like a peace lily, try a cast iron plant or a snake plant (though snake plants are mildly toxic if eaten in large amounts, they are generally considered low risk). Always double-check the scientific name before bringing any new plant home, because common names can be misleading.
When to See a Vet: Recognizing a Serious Reaction
Most peace lily exposures cause mild to moderate discomfort that resolves within a few hours, especially if you rinse the mouth and offer a snack. However, you should see a vet immediately if your cat is having trouble breathing, swelling in the face or throat, vomiting repeatedly, or acting lethargic. Cats with pre-existing health conditions, very young kittens, or older cats may have a harder time recovering. If your cat stops eating or drinking for more than 12 hours, that is also a reason to call your vet. Remember, you know your cat best, trust your instincts.
“A moment of chewing can lead to hours of pain for your cat, but a little prevention keeps everyone safe and happy.”
Keeping your cat safe from peace lilies is mostly about awareness and placement. If you suspect your cat has eaten any part of the plant, act quickly and call your vet. For more ways to protect your cat’s health and well-being, check out our guide on the best cat probiotic supplements to support digestion after a stressful event, or consider a subscription-free cat GPS tracker to keep an eye on outdoor adventures. Your cat’s safety is worth the extra effort.
