Is Caryopteris x clandonensis 'Worcester Gold' toxic to cats?

Mildly. The ASPCA lists caryopteris x clandonensis 'worcester gold' as mildly toxic to cats — a chewing cat typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Caryopteris is not individually listed in the ASPCA Toxic and Non-Toxic Plants database, so its status is unconfirmed; treat with caution and verify with a vet. No significant toxic principle is documented, but eating foliage may cause mild gastrointestinal upset such as drooling or vomiting in cats and dogs.

Caryopteris is not individually listed in the ASPCA Toxic and Non-Toxic Plants database, so its status is unconfirmed; treat with caution and verify with a vet. No significant toxic principle is documented, but eating foliage may cause mild gastrointestinal upset such as drooling or vomiting in cats and dogs. 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 caryopteris x clandonensis 'worcester gold'.

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: Caryopteris x clandonensis 'Worcester Gold' is mildly toxic to dogs as well. See the full caryopteris x clandonensis 'worcester gold' 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.