Is Boston Ivy Toxic to Cats?

Yes — Boston Ivy is mildly toxic to cats

Boston Ivy is a climbing vine often covering building facades. Its berries and leaves contain oxalic acid and irritating raphides. While not severely toxic, ingestion causes GI distress. Often confused with English Ivy, which is more toxic.

Symptoms in Cats

If your cat eats Boston Ivy, watch for these symptoms (onset: 1 to 4 hours):

Oral irritation
Vomiting
Diarrhea
Abdominal pain

What To Do

Monitor at home. Contact vet if your pet ate a large quantity of berries. Usually self-limiting.

Cat-Safe Alternatives to Boston Ivy

✓ Swedish Ivy ✓ Lipstick Plant ✓ Hoya

Quick Facts

Scientific Name

Parthenocissus tricuspidata

Also Toxic to Dogs?

Yes (mild)

Toxic Compound

Oxalic acid, raphides

Toxic Parts

berries, leaves

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Boston Ivy toxicity profile.