Is String Of Pearls toxic to cats?
String of pearls (Curio rowleyanus) is toxic to cats. The agent is pyrrolizidine alkaloids (senecio/curio).
ASPCA Animal Poison Control, 24 hours: (888) 426-4435 (a consultation fee may apply), or call your own vet. Take a piece of the plant with you.
Signs that need a vet the same day whatever the plant: repeated vomiting, drooling that will not stop, swelling of the mouth or face, trouble breathing or swallowing, collapse, or a seizure.
What it does, and why
String of pearls contains pyrrolizidine alkaloids (senecio/curio). These alkaloids are processed by the liver, so repeated small exposures matter more here than with a simple irritant. Do not treat a nibbling habit as harmless.
Signs to watch for
Drooling, vomiting, diarrhea, lethargy; the sap can irritate skin.
How likely is it, really
Most cases are a chewed leaf rather than a meal. The dose matters: a nibble and a swallowed stem are different events. Volume, and how long ago, are the two things the vet will ask.
Keeping the plant anyway
Height alone does not work with a cat — a cat treats a high shelf as a destination. What actually helps: a room the cat does not have unsupervised access to, a hanging position with no adjacent launch point, and clearing fallen leaves the same day, since a dropped leaf on the floor is the usual culprit. A pot of cat grass elsewhere in the room redirects the urge to chew far better than deterrent sprays do.
Is it toxic to people?
Yes, mildly. The same compound irritates human mouths and skin, so it is worth keeping String of pearls out of reach of a toddler and washing your hands after pruning. Serious harm to an adult is very unlikely.
Confirmed pet-safe alternatives
Every plant below is listed by ASPCA as non-toxic to cats, and we checked each entry ourselves.
- Calathea — medium indirect light
- Spider plant — bright indirect light
- Hoya — bright indirect to some direct light, very drought-tolerant
- Parlor palm — medium indirect light
- Areca palm — bright indirect light
- Boston fern — bright indirect light
- Moth orchid — bright indirect light, very drought-tolerant
Sources and how we checked
This species is not listed under a name we could resolve in ASPCA's database, so the record above comes from standard horticultural and veterinary references and is marked unconfirmed. We do not present an unconfirmed plant as safe. The full list is at aspca.org.
This is general information, not veterinary advice. Any animal that is actually unwell needs a vet, not a web page.
Is String of pearls toxic to dogs? · Full String of pearls care guide · All pet-safe houseplants