Peony Toxic?

Updated 2026-03-06| 5 min read| 1,702 found this helpful
Paeonis officinalis
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Peony is verified toxic to cats, dogs, and horses per official ASPCA toxicology data

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The primary active toxic principle in peony plant tissue is the compound paeonol

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Ingestion of peony typically triggers vomiting, diarrhea, and depressive behavior in affected animals

FAQ

Is Peony toxic to Humans?

No formal ASPCA-reported human toxicity under standard exposure; large intentional ingestion may cause mild gastrointestinal distress (Non-toxic)

Is Peony toxic to Cats?

Vomiting, diarrhea, general depression and lethargy (Low)

Is Peony toxic to Dogs?

Vomiting, diarrhea, general depression and lethargy (Low)

Is Peony toxic to Horses?

Vomiting, diarrhea, general depression and reduced activity (Low)

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Toxicity Details

Humans
Non-toxic

No formal ASPCA-reported human toxicity under standard exposure; large intentional ingestion may cause mild gastrointestinal distress

Cats
Low

Vomiting, diarrhea, general depression and lethargy

Dogs
Low

Vomiting, diarrhea, general depression and lethargy

Horses
Low

Vomiting, diarrhea, general depression and reduced activity

Toxicity Snapshot

Toxic PartsAll plant parts, with highest paeonol concentrations found in root bark and stem tissue
Exposure RoutePrimary exposure via ingestion of plant material; rare mild skin irritation from sap contact in sensitive individuals
Toxic CompoundsPaeonol

First Aid & Prevention

First 30 Minutes

  • • Remove all remaining peony material from the exposed animal's mouth and rinse oral cavity with clean cool water
  • • Do not induce vomiting unless explicitly instructed to do so by a licensed veterinary professional
  • • Closely monitor the animal for the onset of vomiting, diarrhea, or unusual lethargy in the first hour post-exposure

Contact Vet Immediately

  • • The animal has ingested more than one small bite of peony plant tissue
  • • Any clinical signs including vomiting, diarrhea, or depression develop after exposure
  • • The exposed animal is juvenile, senior, or has pre-existing gastrointestinal or neurological health conditions

Prevention

  • • Keep potted peony plants and cut peony floral arrangements out of reach of cats, dogs, and other companion animals
  • • Clear wild or cultivated peony growth from horse pastures and grazing areas for livestock
  • • Educate household members and pet sitters to recognize peony plants and avoid feeding them to animals

Treatment & Prognosis

  • • Veterinary administration of activated charcoal to bind unabsorbed paeonol in the digestive tract
  • • Supportive fluid therapy to correct dehydration caused by prolonged vomiting and diarrhea
  • • Symptomatic management of lethargy and depressive symptoms under professional veterinary supervision
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Professional Toxicology

Scientific NamePaeonis officinalis
AliasesCommon Peony、Garden Peony、European Peony
Toxicity Grade
HumansNon-toxic
CatsLow
DogsLow
HorsesLow
Target Organs
Gastrointestinal tractCentral nervous system
Mechanism of Action

• Paeonol irritates the gastrointestinal mucosal lining, leading to vomiting and diarrhea

• Paeonol exerts mild depressant effects on the central nervous system of susceptible animal species

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: No confirmed severe toxicity reports; large volume ingestion may cause mild gastrointestinal distress
Sheep and Goats: Very low risk; adverse effects only recorded after ingestion of very high volumes of peony plant material
Small Companion Mammals (rabbits, guinea pigs): Mild gastrointestinal irritation and reduced appetite may occur after peony ingestion
Confusion Risk

The following plants look similar and may be confused:

Tree Peony Paeonia suffruticosa
Visually nearly identical due to shared large, ruffled flower structure; key difference is tree peony grows as a woody perennial shrub, while P. officinalis is herbaceous and dies back to the ground in winter
Garden Rose Rosa hybrida
Layered pink/white rose blooms are frequently confused with peony flowers; key difference is rose stems have sharp thorns, while peony stems are smooth and thornless
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Related Toxic Plants

Tree Peony
Tree Peony
Paeonia suffruticosa
Low toxicity to cats, dogs, and grazing horses
Chinese Peony
Chinese Peony
Paeonia lactiflora
Low toxicity to companion animals and livestock
California Peony
Paeonia californica
Low toxicity to grazing horses and domestic pets

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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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