Clematis — (c) Gianni Del Bufalo bygdb, some rights reserved (CC BY), uploaded by Gianni Del Bufalo bygdb
Photo by (c) Gianni Del Bufalo bygdb, some rights reserved (CC BY), uploaded by Gianni Del Bufalo bygdbiNaturalistCC BY
cat safety reference

Is Clematis safe for cats?

Clematis spp.

Clematis is a genus of popular flowering vines known for their showy blooms and climbing habit. While beautiful in the garden, they contain irritant compounds that can cause discomfort if ingested by pets.

Clematis spp.Leather flowerVase vineVirgin's bower
Light
Full sun to partial shade
Habit
Climbing vine
Care
Moderate

Safety status

Cats

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

What this means for your cat

Most cats taste clematis once and stop — the leaves contain protoanemonin, an irritant glycoside that produces an unpleasantly stinging mouth feel. ASPCA classifies clematis as toxic to cats, but reactions are usually mild GI and oral irritation rather than systemic poisoning.

What to watch for

Drooling, pawing at the mouth, vomiting, and diarrhea. Oral redness or small mouth ulcers can show up after a real chew. Most cats stop eating the plant well before they swallow much.

Time window

Not precisely documented. In practice, oral irritation begins within minutes of chewing; GI signs typically appear within an hour and resolve in 12–24 hours with supportive care.

When to call the vet

Call your vet or ASPCA Animal Poison Control (888-426-4435) if drooling lasts more than a couple of hours, if vomiting or diarrhea repeats, or if your cat refuses food or water for more than a few hours.

Sources: ASPCA (no first-aid guidance), NC State Extension.

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Catsconcern notes

Common signs

Drooling, vomiting, diarrhea, and oral irritation.

Escalation note

Ingestion typically causes gastrointestinal distress. If your cat has consumed any part of this plant, please contact your veterinarian for guidance.

Safer alternatives

No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.

Source evidence

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Clematis is a large genus of mostly woody vines that are widely cultivated for their ornamental flowers.

Cats & dogs pagedogs pageMy cat ate Clematis

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