Is Amethyst Sea Holly toxic to cats?

Mildly. The ASPCA lists amethyst sea holly 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. Eryngium is not recorded on the ASPCA Toxic and Non-Toxic Plant database for cats or dogs. No alkaloid or glycoside toxins are reported in the literature, and the genus is not a member of any known toxic plant family. However, the absence of an explicit ASPCA 'non-toxic' listing means pet safety cannot be guaranteed; the spiny bracts also pose a physical injury risk to curious animals.

Eryngium is not recorded on the ASPCA Toxic and Non-Toxic Plant database for cats or dogs. No alkaloid or glycoside toxins are reported in the literature, and the genus is not a member of any known toxic plant family. However, the absence of an explicit ASPCA 'non-toxic' listing means pet safety cannot be guaranteed; the spiny bracts also pose a physical injury risk to curious animals. 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 amethyst sea holly.

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: Amethyst Sea Holly is mildly toxic to dogs as well. See the full amethyst sea holly 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.