Is Passiflora quadrangularis toxic to cats?

Mildly. The ASPCA lists passiflora quadrangularis 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. The ripe pulp is a recognised edible fruit, but Passiflora is not individually listed by the ASPCA for pets, and the leaves, stems and unripe fruit contain cyanogenic glycosides that can cause digestive upset. Keep pets from chewing foliage or green fruit, treat with caution, and verify with a vet if ingestion occurs.

The ripe pulp is a recognised edible fruit, but Passiflora is not individually listed by the ASPCA for pets, and the leaves, stems and unripe fruit contain cyanogenic glycosides that can cause digestive upset. Keep pets from chewing foliage or green fruit, treat with caution, and verify with a vet if ingestion occurs. 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 passiflora quadrangularis.

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: Passiflora quadrangularis is mildly toxic to dogs as well. See the full passiflora quadrangularis 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.