Is Hoya toxic to cats?
Hoya is non-toxic to cats (S0 Safe): the ASPCA lists the wax plant (Hoya carnosa) as safe for cats and dogs — the milky sap looks suspicious but carries no toxin on record.
- TOXINnone — no toxic principles on record
- WHAT TO EXPECTno symptoms on record
- CALL THE VETSee a vet only if unusual or persistent symptoms follow ingestion.
Nothing to do — really
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FAQ
My cat chewed a hoya vine — is the milky sap dangerous?
No toxin is on record. The ASPCA lists the wax plant (Hoya carnosa) as "Non-Toxic to Cats" with toxic principles given as "Non-toxic" — the milky look of the sap doesn't make it a poison. Pet Poison Helpline groups Hoya with popular plants that "could cause a bad taste in the mouth or mild stomach upset if ingested, but not likely an urgent trip in to see your veterinarian." Call your vet only if vomiting persists.
Are all hoyas covered by this verdict, or only Hoya carnosa?
Hoya carnosa is the hoya we grade: the ASPCA's Wax Plant entry gives the scientific name Hoya carnosa 'krinkle kurl', with the other names Hindu rope plant and porcelain flower, and lists it as "Non-Toxic to Dogs, Non-Toxic to Cats" with toxic principles "Non-toxic." Pet Poison Helpline's safe-plants article names Hoya in a group of succulents that "could cause a bad taste in the mouth or mild stomach upset" — a nuisance note, not a toxin. The ASPCA also has two other hoya entries, Sweetheart Hoya and Silver Pink Vine; both read "Non-Toxic to Dogs, Non-Toxic to Cats, Non-Toxic to Horses." We have not graded those plants ourselves, so this page's S0 grade covers Hoya carnosa only. If the tag says Hoya carnosa, this page applies; if a pet chews it, Pet Poison Helpline says it could cause a bad taste or mild stomach upset.
My dog chewed a hoya vine — what should I watch for?
Nothing serious is on record. The ASPCA lists the wax plant (Hoya carnosa) as "Non-Toxic to Dogs, Non-Toxic to Cats," with toxic principles "Non-toxic." Pet Poison Helpline puts Hoya among popular plants that "could cause a bad taste in the mouth or mild stomach upset if ingested, but not likely an urgent trip in to see your veterinarian." In plain terms, PPH says a dog that chews it may find the taste unpleasant or get a mildly upset stomach, and that it is not likely to need an urgent vet visit. If the upset doesn't settle, call your vet.
Is a wax flower the same plant as a hoya?
No — the names overlap but the records don't. Hoya's common name is wax plant: the ASPCA's Wax Plant and Honey Plant entries both give the scientific name Hoya carnosa. The name wax flower belongs to a different plant: the ASPCA uses it as another name for Madagascar jasmine (Stephanotis floribunda), whose entry reads "Non-Toxic to Dogs, Non-Toxic to Cats, Non-Toxic to Horses." We have not graded Madagascar jasmine ourselves, so this page's S0 verdict covers Hoya carnosa only. Check the scientific name on the tag before you rely on either.