Is Siskiyou Blue Idaho Fescue toxic to cats?

Mildly. The ASPCA lists siskiyou blue idaho 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 idahoensis is not individually listed in the ASPCA Toxic and Non-Toxic Plants database. Ornamental and native fescues are generally regarded as non-toxic, but as the species is unverified, treat with caution: ingestion may cause mild GI upset. Endophyte-related fescue toxicosis is a grazing-livestock issue of tall fescue, distinct from this ornamental. Confirm with a vet before assuming it is pet-safe.

Festuca idahoensis is not individually listed in the ASPCA Toxic and Non-Toxic Plants database. Ornamental and native fescues are generally regarded as non-toxic, but as the species is unverified, treat with caution: ingestion may cause mild GI upset. Endophyte-related fescue toxicosis is a grazing-livestock issue of tall fescue, distinct from this ornamental. Confirm with a vet before assuming it is pet-safe. 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 siskiyou blue idaho 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: Siskiyou Blue Idaho Fescue is mildly toxic to dogs as well. See the full siskiyou blue idaho 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.