Is Wisteria safe for dogs?

Yes, wisteria is toxic to dogs. All parts of the plant are considered harmful, but the seeds and pods carry the highest concentration of toxic compounds — lectins and wisterin — and can cause gastrointestinal distress even in small amounts.

The primary signs are vomiting (sometimes bloody), diarrhea, and lethargy. Sustained GI losses can lead to dehydration, and bloody vomiting or unresponsiveness are the highest-severity flags that require immediate in-clinic care rather than a phone consultation.

Remove any remaining plant material from your dog's mouth and reach, then call ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661) before attempting any home treatment. Do not give hydrogen peroxide or try to induce vomiting without speaking to a poison-control specialist first — dose and timing matter and the wrong approach can cause additional harm.

The seeds and pods are the most toxic parts, containing lectins and wisterin that are harmful to dogs. That said, the severity guidance indicates that even one or two seed pods can be enough to warrant veterinary care, so any ingestion — seeds, pods, or other plant material — should be treated as a potential emergency.