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Toxic

Is wisteria toxic to dogs?

Toxic. Wisteria can cause vomiting, sometimes with blood, along with diarrhea and low energy.

If your dog ate or touched this, call your vet or a pet poison line now

United States

ASPCA Poison Control+1 (888) 426-443524/7, 365 days a year · A consultation fee may apply · Run by the ASPCA for pet owners and vets.
Pet Poison Helpline+1 (855) 764-766124/7 · A fee applies; their website has the current price · Serves the US, Canada and the Caribbean.

Poison lines in other countries: United Kingdom, Australia, Canada, New Zealand

United Kingdom

Animal PoisonLine+44 1202 50900024 hours a day · A fee applies; their website has the current price · Run by the Veterinary Poisons Information Service for pet owners; for collapse, fits or breathing trouble, call your vet.

Australia

Animal Poisons Helpline1300 869 73824/7 · From A$75 per consultation; their website has the current price · Staffed by poisons information consultants with emergency vet or pharmacy backgrounds.

Canada

Pet Poison Helpline+1 (855) 764-766124/7 · A fee applies; their website has the current price · Serves the US, Canada and the Caribbean.

New Zealand

NZ Animal Poisons Helpline0800 869 73824/7 · Charges apply · The NZ National Poisons Centre does not advise on animals and refers pet owners here.

Find an emergency vet

What to do now

Call your vet or a pet poison line now.
Take any plant pieces away and rinse your dog's mouth with water.
Bring a piece of the plant in a bag, or a photo, to help identify it.

Don't

Don't make your dog vomit unless a vet tells you to.
Don't give milk, oil, salt or other home remedies unless a vet tells you to.

Signs to watch for

Vomiting, sometimes with blood
Diarrhea
Low energy (depression)

Why

Wisteria contains a lectin and a glycoside called wisterin.

Sources

Guide reviewed 9 October 2026.

General information from the sources above, not a diagnosis. When in doubt, call your vet.