The aluminum plant (Pilea cadierei) is not toxic to cats. The ASPCA lists it as non-toxic to cats, dogs, and horses, making it one of the safer houseplant choices for pet owners. That said, eating any plant material can still cause mild stomach upset in cats, so it’s worth knowing what to expect.
What the ASPCA Classification Means
The ASPCA maintains one of the most comprehensive databases of plant toxicity for pets. The aluminum plant falls squarely in the non-toxic category. Plants with this classification are not expected to cause life-threatening reactions if your cat chews on or swallows a piece. This is a meaningful distinction from plants labeled as toxic, which contain compounds that can damage organs, disrupt the nervous system, or cause serious poisoning.
Non-toxic does not mean “designed to be eaten,” though. Cats are obligate carnivores, and their digestive systems aren’t built to process large amounts of plant fiber. Even a completely safe plant can irritate a cat’s stomach simply because it’s unfamiliar material passing through their gut.
What Happens if Your Cat Eats It
If your cat nibbles on an aluminum plant leaf, the most likely outcome is nothing at all. A small taste or occasional chew typically causes no reaction. If your cat eats a larger amount, you may see vomiting or mild gastrointestinal upset. This is a general response to eating plant matter, not a sign of poisoning. It usually resolves on its own within a few hours.
Watch for repeated vomiting, loss of appetite, lethargy, or diarrhea lasting more than a day. These signs aren’t typical for aluminum plant ingestion, but they could indicate your cat ate something else or has a sensitive stomach that needs attention. If your cat seems acutely ill or is deteriorating quickly, contact your vet or call the ASPCA Animal Poison Control Center at 888-426-4435 or the Pet Poison Helpline at 855-764-7661.
Don’t Confuse It With Toxic Plants
The aluminum plant gets its common name from the silvery, metallic-looking patches on its leaves. It’s a compact, leafy plant in the Pilea family, which is generally a pet-friendly group. However, several popular houseplants that look superficially similar are genuinely dangerous to cats.
- Dieffenbachia (dumb cane): Has large, variegated leaves that can resemble Pilea species at a glance. It contains calcium oxalate crystals that cause intense oral pain, drooling, and swelling if chewed.
- Caladium (angel wings): Features striking silver and green patterned leaves. Also contains calcium oxalate crystals and is toxic to cats.
- Chinese evergreen (Aglaonema): Another patterned-leaf houseplant sometimes confused with aluminum plant. It’s toxic to cats and can cause oral irritation and vomiting.
If you’re buying an aluminum plant, verify the scientific name on the label: Pilea cadierei. Common names vary between retailers and regions, so confirming the Latin name is the most reliable way to make sure you’re bringing home the right plant.
Keeping Your Cat From Grazing
Even with a non-toxic plant, repeated chewing can damage the plant and isn’t great for your cat’s digestion. Cats often chew plants out of boredom, curiosity, or a desire for roughage. Offering cat grass (wheatgrass or oat grass) gives them a safe outlet for that urge and often reduces interest in your houseplants.
Placing the aluminum plant on a high shelf or in a room your cat doesn’t frequent works well too. Aluminum plants are compact enough to fit on wall-mounted shelves or hanging planters, keeping them out of paw’s reach. Some cat owners find that placing citrus peels near a plant discourages investigation, since most cats dislike the smell.
Other Cat-Safe Pilea Varieties
If you like the look of the aluminum plant, you’ll be happy to know that other popular Pilea species also carry non-toxic classifications. The Chinese money plant (Pilea peperomioides), which has become a trendy houseplant in recent years, is similarly safe for cats. The friendship plant (Pilea involucrata), with its textured, burgundy-tinged leaves, is another non-toxic option. The Pilea genus as a whole is one of the more reliably pet-friendly plant families, making it a good starting point if you’re building a collection in a home with cats.