Are Peonies Toxic to Cats?

Quick Answer

Yes, peonies are toxic to cats. The plant contains paeonol, concentrated mainly in the bark and roots, though the flowers and leaves also carry some. Typical exposure causes gastrointestinal upset — it’s a mild-to-moderate toxicity, not a common source of severe or life-threatening poisoning in cats.

RESEARCH-BASED SAFETY GUIDE

Sourced from the ASPCA Animal Poison Control Center’s plant database. Last reviewed: August 2026. Not a substitute for professional veterinary care — see our methodology.

Table of Contents

1. Which part of the peony is most concentrated with toxin
2. Symptoms to watch for
3. What to do if your cat ate peony
4. Cut peonies vs. garden peonies
5. FAQ

Which Part of the Peony Is Most Concentrated With Toxin

Direct answer: Paeonol, the compound responsible for peony’s toxicity, is most concentrated in the bark and roots of the plant — parts a cat is less likely to encounter with a cut flower arrangement than with a garden plant. The flowers and leaves contain some toxin as well, so cut peonies in a vase aren’t risk-free, but exposure from a bouquet is generally a lower-dose scenario than a cat digging at the base of a garden peony.

Symptoms to Watch For

• Vomiting
• Diarrhea
• Lethargy
• Loss of appetite

These symptoms typically appear within a few hours of ingestion and are generally self-limiting, resolving as the plant material passes through the digestive system.

What to Do If Your Cat Ate Peony

Direct answer: For a small amount of flower or leaf with mild symptoms, monitor your cat and remove access to the plant. Call your vet if vomiting or diarrhea persists, your cat becomes noticeably lethargic, or you know they had access to the roots or bark specifically, which carry a higher concentration of the toxin. As always, the ASPCA Animal Poison Control Center at (888) 426-4435 can advise if you’re unsure.

Cut Peonies vs. Garden Peonies

If peonies show up in your home mainly as cut flowers in arrangements, the practical risk to an indoor cat is generally lower than for a household with an outdoor cat that has access to a garden peony’s base, where roots and bark (the most concentrated parts) are more accessible. Either way, keeping peony arrangements out of reach of a cat prone to chewing flowers is the simplest precaution.

FAQ

Are peonies poisonous to cats?

Yes — they contain paeonol, most concentrated in the bark and roots, causing mild-to-moderate gastrointestinal upset if eaten.

What part of the peony is most toxic to cats?

The bark and roots carry the highest concentration of the toxin, more than the flowers and leaves.

Are cut peonies in a vase safe around cats?

Not entirely risk-free, but generally lower risk than garden peonies since a cat is less likely to access the roots and bark from a cut arrangement.

What are the symptoms of peony poisoning in cats?

Vomiting, diarrhea, lethargy, and loss of appetite, typically appearing within a few hours and resolving on their own.

Is peony poisoning in cats a medical emergency?

Usually not for typical flower or leaf exposure, but persistent symptoms or known access to roots/bark warrant a vet call.

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Sources: ASPCA Animal Poison Control Center plant database. Author: CoquiPaws Editorial Team · Last updated: August 2026.