Is Clematis Toxic to Cats and Dogs?
Yes, all parts of the clematis plant are considered toxic to cats, dogs, and horses. Ingestion can lead to uncomfortable gastrointestinal symptoms. The plant contains an irritant glycoside, a substance that can cause a reaction in the digestive system of an animal.
Even chewing on a small piece of a leaf, stem, or flower can cause irritation. Pet owners should understand the potential risks associated with this popular garden plant. Clematis is also known by other common names, including Virgin’s Bower and Leatherflower.
Clematis: what the ASPCA database lists
| ASPCA entry | Clematis |
|---|---|
| Other common names | Virgin’s Bower, Leatherflower |
| Scientific name | Clematis spp. |
| Family | Ranunculaceae |
| Toxic to | Toxic to Dogs, Toxic to Cats, Toxic to Horses |
| Non-toxic to | None listed |
| Toxic principles | Irritant glycoside (Protoanemonin) |
| Clinical signs listed | Salivation, vomiting, diarrhea. |
What the ASPCA says about clematis
The American Society for the Prevention of Cruelty to Animals (ASPCA) identifies Clematis spp. as a plant that is toxic to cats, dogs, and horses. The plant’s toxicity is due to an irritant glycoside called protoanemonin. This substance is present in the plant and is responsible for the adverse reactions.
The clinical signs of clematis ingestion reported by the ASPCA are related to irritation of the digestive system. A pet that has chewed or eaten the plant may show symptoms such as:
- Salivation or drooling
- Vomiting
- Diarrhea
These symptoms are a direct result of the toxic principle irritating the mouth, stomach, and intestines.
What clematis toxicity means for your pet
If you have clematis in your garden or home, it poses a risk to curious pets. Cats and dogs that chew on leaves, stems, or flowers can experience discomfort. Puppies and kittens are sometimes more inclined to explore new things with their mouths, which can put them at a higher risk of ingesting toxic plants.
The symptoms of salivation, vomiting, and diarrhea are the body’s natural response to the irritant in the plant. The severity of the reaction can depend on how much the pet ingested. Even if a pet only mouths the plant without swallowing, the irritant can still cause excessive drooling. It is always safest to prevent pets from having access to plants known to be toxic.
How to keep pets and this plant separate
The most effective way to prevent clematis poisoning is to ensure your pets cannot reach the plant. For outdoor plants, consider using pet-safe fencing or other barriers around the garden bed where clematis is growing. Supervise your dog or cat closely when they are outside in areas with the plant.
If you bring cuttings indoors for floral arrangements, place the vase in a location that your cat or dog absolutely cannot access. Remember that cats can climb and jump to high places. Regularly check your yard and home for fallen leaves or flowers and clean them up promptly to remove the temptation for a curious pet.
When to call your vet
If your pet chewed or ate part of this plant, call your veterinarian or an animal poison control line. Note which plant and which part, how much may be gone and when, and take a photo or a piece of the plant with you.
If you suspect your cat or dog has eaten any part of a clematis plant, contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. A consultation fee may apply. Be prepared to tell the professional what part of the plant your pet ate, how much you think they consumed, and when it happened. Do not attempt to induce vomiting or provide any home remedies unless specifically instructed by a veterinary professional.
Emergency signs: go now
- Collapse, fainting or severe weakness
- Seizures, tremors or trouble standing
- Trouble breathing or blue, gray or very pale gums
- Repeated vomiting or retching, or a swollen, painful belly
- Any known contact with a substance listed as toxic, even before signs appear
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- Vomiting or diarrhea that lasts or keeps coming back
- Not eating or drinking, or drinking much more than usual
- Drooling, pawing at the mouth or a swollen face
- Lethargy, hiding or acting unlike themselves
ASPCA Animal Poison Control Center: (888) 426-4435 (a consultation fee may apply). Your own vet or nearest emergency clinic is always a good first call.
Sources
Last checked October 21, 2026. Listings and guidance can change; your veterinarian knows your pet’s health history.