The most popular houseplants in the world — pothos, ZZ plant, monstera, peace lily — are toxic to cats and dogs. Nobody leads with that. They end up on every "easy beginner plants" list, get purchased by well-meaning pet owners, and occasionally land a dog or cat at the vet. This post is the one that's actually upfront about it.
Below you'll find a clear list of plants that are genuinely safe to have around pets, a list of common plants that are not, and specific guidance on what to do if your animal eats something and you're not sure what it was. The goal here is clarity — not to scare you away from plants, but to make sure you're choosing the right ones for your household.
The authoritative reference for plant toxicity is the ASPCA Animal Poison Control database at aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants. It's free, searchable by plant name, and covers both cats and dogs. When you're unsure about a specific species or cultivar, check there first. This post covers the most common plants you're likely to encounter, but it's not exhaustive.
Plants That Are Safe for Cats and Dogs
These plants have been assessed by the ASPCA as non-toxic to both cats and dogs. "Non-toxic" means eating a reasonable amount won't cause serious harm — though any plant material in large quantities can upset a stomach. These are genuinely good choices for households with curious pets.
Spider Plant (Chlorophytum comosum)
One of the most popular hanging plants in the world, and safe for both cats and dogs. Cats are sometimes attracted to spider plants because of a mild hallucinogenic compound that resembles catnip — if your cat chews on it, they'll be fine, but the plant won't be. Consider hanging it out of reach if your cat is particularly interested.
Calathea / Prayer Plant (Calathea spp., Maranta leuconeura)
Calatheas are non-toxic and visually striking, with patterned leaves that fold upward at night — which is where the "prayer plant" name comes from. They like humidity and indirect light, which makes them a good fit for bathrooms. Their only downside is they're a bit dramatic about water quality and humidity, but they won't hurt your animals.
Boston Fern (Nephrolepis exaltata)
Boston ferns are non-toxic to both cats and dogs. They do well in humid environments with indirect light and are a classic choice for hanging baskets. They need more frequent watering than some plants on this list, but they're safe if your cat decides to bat at the fronds.
Areca Palm (Dypsis lutescens)
A graceful indoor palm that's safe for pets and grows well in bright, indirect light. Areca palms do best with regular watering and humidity — they're not the most forgiving plant if you frequently miss watering days, but they're a good option if you have room and a sunny spot.
Parlor Palm (Chamaedorea elegans)
Smaller and more tolerant of lower light than the areca palm, the parlor palm is pet-safe and handles indoor conditions well. It's slow-growing, meaning it won't outgrow a corner quickly, and it tolerates irregular watering better than most palms.
Cast Iron Plant (Aspidistra elatior)
Non-toxic to both cats and dogs, and one of the most neglect-tolerant plants you can own. Dark corners, irregular watering, low humidity — the cast iron plant handles all of it. If you have a challenging space and pets, this is one of the best choices available.
Haworthia
A small succulent that looks similar to aloe vera but is non-toxic to pets (unlike aloe). Haworthias stay compact, need minimal watering, and do well on bright windowsills. They're a good alternative for anyone who wants a succulent but has cats or dogs in the house.
Orchid (Phalaenopsis spp.)
The standard grocery store orchid — phalaenopsis — is non-toxic to both cats and dogs. Orchids have a reputation for being difficult, but phalaenopsis is actually one of the easier houseplants once you understand that it wants bright indirect light, minimal watering (once a week at most), and to dry out completely between waterings.
Common Houseplants That Are Toxic to Cats and Dogs
This is the list that most plant posts skip over or bury in a footnote. These are popular, widely sold plants that pose real risk to pets. Some cause mild GI upset; others can cause serious organ damage or death. The risks are noted below each one.
Pothos (Epipremnum aureum) — Toxic
One of the most commonly recommended beginner plants, and toxic to both cats and dogs. It contains insoluble calcium oxalate crystals that cause intense burning and swelling in the mouth, drooling, vomiting, and difficulty swallowing. Not typically fatal in small amounts, but very unpleasant and potentially dangerous if large quantities are consumed.
ZZ Plant (Zamioculcas zamiifolia) — Toxic
ZZ plants also contain calcium oxalate crystals and are toxic to cats and dogs. Symptoms are similar to pothos ingestion: oral irritation, drooling, vomiting. Keep out of reach or skip this one if you have pets that chew on plants.
Monstera (Monstera deliciosa) — Toxic
Monstera is everywhere right now, and it's toxic to both cats and dogs — same calcium oxalate mechanism as pothos and ZZ. Drooling, pawing at the mouth, and vomiting are common symptoms. The large, distinctive leaves are often interesting to cats, which makes placement challenging.
Peace Lily (Spathiphyllum) — Toxic
Peace lilies are one of the more serious ones. They cause oral irritation and GI symptoms in cats and dogs, but more importantly, they're often confused with true lilies (Lilium spp.) — which are far more dangerous, especially to cats. See the note on true lilies below.
True Lilies (Lilium spp. and Hemerocallis spp.) — Severely Toxic to Cats
This deserves its own callout: true lilies — including Easter lily, tiger lily, Asiatic lily, and daylilies — are extremely toxic to cats. Every part of the plant is dangerous, including the pollen and water from the vase. Even small exposures can cause acute kidney failure in cats. If you have cats, do not bring cut lilies into your home.
Sago Palm (Cycas revoluta) — Severely Toxic
Sago palms are not true palms but are sold as decorative houseplants and are one of the most toxic plants to both cats and dogs. All parts are poisonous, and the seeds are particularly dangerous. Ingestion can cause liver failure. This is a plant to avoid entirely in a pet household.
What to Do If Your Pet Eats a Plant
- Identify the plant as specifically as possible. The common name isn't always enough — look for the botanical (Latin) name on the tag or in the app you used to buy it. Take a photo if you need help identifying it.
- Call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435. There is a consultation fee, but they're available 24/7 and can tell you whether the ingestion requires emergency treatment.
- Watch for symptoms: drooling, vomiting, diarrhea, swelling around the mouth or face, lethargy, tremors, or difficulty breathing. The severity and timing of symptoms varies widely depending on the plant.
- Don't wait to see if they're fine. With seriously toxic plants — lilies for cats, sago palms, and others — early treatment is significantly more effective than treatment after symptoms develop.
A simple rule of thumb: Before buying any plant, look it up on the ASPCA database. The search takes 30 seconds and tells you everything you need to know. Do this before the plant comes home, not after your cat has already chewed on it.
Common Mistakes in Pet-Safe Plant Buying
- Trusting that a plant is safe because it's popular. Pothos, monstera, and ZZ plants are ubiquitous precisely because they're easy to grow — not because they're safe. Popularity says nothing about toxicity.
- Assuming all succulents are safe. Aloe vera is toxic to pets. Kalanchoe is toxic. Jade plants are toxic. Haworthia is safe. You have to check each species individually.
- Placing toxic plants on high shelves and calling it solved. Cats climb. If the plant is in the house and your cat can reach it, assume it will eventually be chewed. Either put it somewhere physically inaccessible or choose a different plant.
- Not knowing what plants are already in your home. If you inherited houseplants from a previous tenant, received them as gifts, or bought them without researching — now is a good time to identify everything you're living with and check the ASPCA database.
Having pets doesn't mean you can't have plants. It means you choose your plants more deliberately. The safe list above includes beautiful, interesting options across different sizes, light requirements, and care levels. A household with both thriving plants and healthy animals is completely achievable — it just starts with knowing what you're bringing through the door.
More notes from the soil — honest, practical, and written for people who keep trying.
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