Toxic Plants for Cats and Dogs in Apartments
Living in an apartment with a pet means thinking carefully about what you bring into your space. Decorative houseplants can brighten up a rental, but many common varieties are genuinely dangerous if your cat or dog decides to nibble on them. Some toxic plants can cause anything from mild stomach upset to life-threatening organ damage within hours. So which plants should you avoid, and what can you safely grow instead?
Lilies
Why Lilies Are Particularly Risky
Lilies from the Lilium or Hemerocallis species can be lethal to cats. The risk to cats is far more severe than to dogs. Even small exposures to pollen from these flowers can cause kidney failure or even death in cats. In dogs, signs tend to be limited to stomach upset, though any eaten bulbs could potentially cause a stomach or intestinal blockage. However, any exposure in cats, including leaves, bulbs, flowers, pollen or water that the flowers have been sitting in, can cause acute kidney injury and even death.
What This Means for Your Apartment
This applies to cut flowers too. If someone brings you lilies as a gift or you pick up a bouquet at the grocery store, you need to know exactly what’s in it. Many floral arrangements sneak lilies in without you realizing it. If you have a cat, the safest approach is to skip lilies entirely—don’t risk it.
Sago Palms
Sago palms are highly toxic to small animals and overall dangerous to all pets. While the entire plant is toxic, the seeds or nuts are the most toxic part. Sago palms can cause severe vomiting and diarrhea, difficulty clotting the blood, liver failure and even death. These plants look appealing in a living room, but a single bite can trigger serious damage. If you already have one in your apartment, either move it completely out of reach or consider rehoming it.
Azaleas and Rhododendrons
Azaleas and rhododendrons can have different effects depending on the amount ingested by dogs, cats and horses. In large ingestions, these plants can cause severe signs like irregular heartbeats and seizures. Typically, only a mild stomach upset is seen with small ingestions in small animals. While some small nibbles might only cause mild stomach issues, larger amounts are genuinely dangerous.
Pothos (Devil’s Ivy)
Devil’s Ivy or pothos have the same toxic concerns as Peace lilies, meaning the signs are unlikely to be severe and should not warrant medical attention unless the stomach upset becomes more than mild. Pothos contains calcium oxalate crystals that cause oral irritation, drooling, and vomiting in cats and dogs. The good news is that severe symptoms are rare, but the plant is still on the ASPCA toxic list because some pets do react. If you love trailing plants, there are safer options—spider plants, for instance, are completely non-toxic.
Daffodils and Tulips
Tulips, though beautiful, can cause stomach upset, which in some cases can be severe. If large chunks of the bulbs are ingested, it can also cause stomach or intestinal blockage. Daffodils can cause stomach upset if ingested, which in some cases can be severe. If large chunks of the bulbs are eaten, it is possible a stomach or intestinal blockage or low blood pressure can occur. The bulbs are the most dangerous part, so if you ever plant spring bulbs in pots on your balcony or near a window, keep your pet away.
Dieffenbachia (Dumb Cane)
The calcium oxalate crystals cause the lips, mouth, and tongue to swell, making it difficult to talk, hence the name “dumb cane”. Dumb cane plant (Dieffenbachia seguine) gets its common name from the calcium oxalate crystals that will cause the lips, mouth, and tongue to swell, making it difficult to talk. The immediate reaction—mouth swelling and drooling—is hard to miss and is a sign your pet needs veterinary care right away.
Peace Lilies
Peace lilies may add a modern flare to your flowerpot, but they are unfortunately toxic to our pets. Peace lilies contain insoluble calcium oxalate crystals, which can cause stomach upset, drooling and mouth pain. But, since they are not absorbed systemically, they don’t cause organ damage. Peace lilies show up everywhere because they’re touted as “easy” and good for air quality. They’re less dangerous than some other plants on this list, but they still belong out of your pet’s reach.
Other Common Toxic Houseplants
Beyond the big ones, watch out for asparagus ferns, which are popular plants for indoor use because they’re hardy, easy to care for, and need little water and sunlight. This light, airy plant contains a steroidal agent called sapogenin, which is highly toxic to dogs and cats. If ingested, aloe (Aloe vera) can cause vomiting, lethargy, and diarrhea. Chewing on jade plant succulents can lead to vomiting, depression and loss of balance. Many people keep these because they’re low-maintenance and forgiving, but they’re not worth the risk if you have a curious pet.
Safe Plant Alternatives
The good news: plenty of beautiful plants are genuinely safe. Spider plants (Chlorophytum comosum) are non-toxic to both cats and dogs according to the ASPCA. Cats are often attracted to spider plants and may chew on them — while this might cause mild GI upset from the plant fiber, there’s no toxicity concern. Boston ferns (Nephrolepis exaltata) are completely non-toxic to dogs and cats. They’re one of the most popular pet-safe houseplants, providing lush greenery without any risk. African violets, bamboo palm, and money trees are also safe bets.
What to Do If Your Pet Eats a Toxic Plant
Remove plant material from the mouth, and rinse with water. Do not induce vomiting unless instructed to do so by your veterinarian. Next, call your veterinarian or a pet poison control hotline. Tell them what happened and follow their instructions. If you believe that your animal is ill or may have ingested a poisonous substance, or if you have any further questions regarding the information contained in this database, contact either your local veterinarian or the ASPCA Poison Control’s 24-hour emergency poison hotline at (888) 426-4435. Don’t wait to see if symptoms develop—especially with lilies in cats. Time matters.
How to Keep Your Pet Safe in Your Apartment
The most straightforward approach: Keep plants out of reach (hanging baskets, shelves). Train your pets not to chew on plants. Regularly check new plants before bringing them home. Ask your vet if you are unsure about the plants in your home. Hanging planters and high shelves work for some pets, but determined nibblers may still find a way. If your dog or cat is a habitual plant chewer, honestly consider whether houseplants are worth the stress—or stick exclusively to pet-safe varieties and keep them in rooms your pet can’t access alone.
When you’re shopping for plants, check the name against the ASPCA’s list before you buy. Keep a bookmark to that resource handy. When friends or family bring plants as gifts, politely ask what they are before accepting them. It sounds fussy, but it’s way easier than a vet emergency at 2 a.m.
FAQ
What if my cat just licked a lily?
Contact your vet or ASPCA Poison Control immediately at (888) 426-4435. Even minimal exposure to lily pollen or sap can start kidney damage in cats, and early treatment is critical. Don’t wait to see if symptoms appear.
Can I keep toxic plants on high shelves where my pet can’t reach them?
It depends on your pet. If your cat is a climber or your dog can jump or knock things over, a shelf might not be safe enough. Hanging planters in a room you can close off are better. For the most dangerous plants, removal is the simplest and safest choice.
Are there any toxic plants that are also safe in small amounts?
Some plants cause only mild stomach upset if your pet nibbles a leaf or two, like pothos or peace lilies. But toxicity and dose interact unpredictably—a small pet might get sicker from a small amount than a large pet would. It’s not worth guessing. If a plant is on the toxic list, treat it as off-limits.
What are the first signs my pet ate something toxic?
Watch for drooling, vomiting, diarrhea, loss of appetite, lethargy, or unusual behavior. Some symptoms appear within hours, others take longer. If you know your pet ate a toxic plant, call your vet regardless of whether you see symptoms.
Where can I find a complete list of safe plants for my apartment?
The ASPCA maintains a searchable database of toxic and non-toxic plants at aspca.org. You can search by plant name or filter by pet species. Keep the link handy for when you’re plant shopping or a friend drops off a bouquet.
