Is Stinking Iris toxic to cats?

Yes — stinking iris is toxic to cats according to the ASPCA. Keep it well away from any cat that chews plants; reactions can be significant. ASPCA lists all Iris species as toxic to dogs, cats, and horses; pentacyclic terpenoids are the toxic agents, concentrated in the rhizomes. The RHS also notes it is harmful if eaten and recommends gloves and protective equipment when handling. Symptoms of ingestion include salivation, vomiting, lethargy, and diarrhea.

ASPCA lists all Iris species as toxic to dogs, cats, and horses; pentacyclic terpenoids are the toxic agents, concentrated in the rhizomes. The RHS also notes it is harmful if eaten and recommends gloves and protective equipment when handling. Symptoms of ingestion include salivation, vomiting, lethargy, and diarrhea. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your cat has had access to stinking iris.

Stay calm. Remove any plant from your cat's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

The ASPCA classification Growli uses applies to both cats and dogs: Stinking Iris is toxic to dogs as well. See the full stinking iris pet-safety guide for both species.

For a similar look without the risk, see the best cats-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.