Is Boulder Blue Fescue toxic to cats?

Mildly. The ASPCA lists boulder blue fescue 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. Festuca glauca is not individually listed in the ASPCA Toxic and Non-Toxic Plants database. Ornamental fescues are generally regarded as non-toxic, but as the species is unverified, treat with caution: ingestion may cause mild GI upset. Fescue toxicosis from endophytes is a grazing-livestock concern tied to tall fescue, distinct from this ornamental. Verify with a vet before assuming pet safety.

Festuca glauca is not individually listed in the ASPCA Toxic and Non-Toxic Plants database. Ornamental fescues are generally regarded as non-toxic, but as the species is unverified, treat with caution: ingestion may cause mild GI upset. Fescue toxicosis from endophytes is a grazing-livestock concern tied to tall fescue, distinct from this ornamental. Verify with a vet before assuming pet safety. 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 boulder blue fescue.

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 in the US, or Animal PoisonLine on 01202 509 000 in the UK 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: Boulder Blue Fescue is mildly toxic to dogs as well. See the full boulder blue fescue 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.