Italian arum Toxic?

Updated 2026-03-06| 2 min read| 1,457 found this helpful
Italian arum
1

All plant parts including berries are toxic to most mammals, though berries are non-toxic to birds

2

Toxicity is driven by calcium oxalate raphides, oxalates, glycosides, and saponins

3

Ingestion can cause severe gastrointestinal irritation, neurological damage, and permanent organ injury

FAQ

Is Italian arum toxic to Humans?

Salivation, dyspnea from pharyngeal edema, vomiting, abdominal pain, tenesmus, diarrhea, movement disorders, heart arrhythmia, hypotension, and potential CNS, liver, and kidney damage (High)

Is Italian arum toxic to Cats?

No species-specific clinical data available; expected symptoms include oral irritation, excessive salivation, vomiting, diarrhea, and abdominal pain post-ingestion (High)

Is Italian arum toxic to Dogs?

Documented poisoning cases show salivation, vomiting, abdominal pain, diarrhea, and potential organ damage in severe cases (High)

Is Italian arum toxic to Horses?

Restlessness, head turning, pawing at the abdomen, frequent lying down, appetite loss, adipsia, salivation, diarrhea, and intestinal peristalsis paralysis (High)

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Toxicity Details

Humans
High

Salivation, dyspnea from pharyngeal edema, vomiting, abdominal pain, tenesmus, diarrhea, movement disorders, heart arrhythmia, hypotension, and potential CNS, liver, and kidney damage

Cats
High

No species-specific clinical data available; expected symptoms include oral irritation, excessive salivation, vomiting, diarrhea, and abdominal pain post-ingestion

Dogs
High

Documented poisoning cases show salivation, vomiting, abdominal pain, diarrhea, and potential organ damage in severe cases

Horses
High

Restlessness, head turning, pawing at the abdomen, frequent lying down, appetite loss, adipsia, salivation, diarrhea, and intestinal peristalsis paralysis

Toxicity Snapshot

Toxic PartsAll plant parts including berries (berries are non-toxic to birds); drying or cooking reduces toxicity
Exposure RoutePrimary exposure via accidental ingestion; contact with mucous membranes (mouth, eyes) can also cause local irritation
Toxic CompoundsNeedle-shaped calcium oxalate crystals (raphides); Soluble oxalic acid and oxalate salts; Aroin glycoside; Triglochinin (cyanogenic glycoside); Saponins

First Aid & Prevention

First 30 Minutes

  • • Remove any remaining plant material from the mouth, skin, or fur of the exposed individual immediately
  • • Rinse the mouth thoroughly with cool clean water to reduce local irritation from oxalate crystals
  • • Do not induce vomiting unless explicitly directed by a medical or veterinary professional
  • • Monitor closely for signs of respiratory distress caused by pharyngeal swelling

Contact Vet Immediately

  • • Any confirmed or suspected ingestion of the plant by children, pets, or livestock
  • • Development of symptoms including excessive salivation, difficulty breathing, vomiting, diarrhea, or abdominal pain post-exposure
  • • Signs of neurological changes, abnormal behavior, or collapse following exposure

Prevention

  • • Keep the plant out of reach of children and pets, and restrict grazing livestock access to areas where it grows
  • • Verify the identity of foraged wild greens by checking for the characteristic garlic scent of wild garlic before consumption
  • • Wear protective gloves when handling the plant to avoid contact with irritant oxalate crystals

Treatment & Prognosis

  • • Initiate appropriate decontamination measures as per standard toxic exposure protocols
  • • Administer analgesics to relieve pain from local mucosal irritation
  • • Use antihistamines or glucocorticoids to treat severe swelling and inflammatory reactions
  • • Provide calcium supplementation for cases of very large ingestion to correct oxalate-induced hypocalcemia
  • • Deliver supportive symptomatic care for associated symptoms including arrhythmia, diarrhea, and organ damage
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Professional Toxicology

Scientific NameArum italicum Mill.
AliasesItalian Lords-and-Ladies、Italienischer Aronstab (German)、Arum d'Italie (French)、Gouet d'Italie (French)、Gigaro chiaro (Italian)
Toxicity Grade
HumansHigh
CatsHigh
DogsHigh
HorsesHigh
Target Organs
Oral mucosaPharynxGastrointestinal tractHeartCentral nervous systemLiverKidneys
Mechanism of Action

• Needle-shaped calcium oxalate raphides cause immediate local irritation and damage to mucous membranes on contact or ingestion

• Soluble oxalates bind to systemic calcium, potentially leading to hypocalcemia and crystalline damage to kidneys and other organs

• Glycosides and saponins contribute to systemic toxicity, though cyanide poisoning from triglochinin is rare due to immediate irritation limiting ingestion volume

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Birds: Severely toxic (+++) overall, though the plant's berries are non-toxic to bird species
Cattle: Highly susceptible; symptoms include regurgitation, colic, green-yellow sour-smelling diarrhea, tremor, hindlimb weakness, and collapse
Sheep: Documented poisoning cases with gastrointestinal irritation and systemic toxicity
Pigs: Documented poisoning cases with local irritation and systemic organ damage risk
Confusion Risk

The following plants look similar and may be confused:

Other Arum species Arum spp.
Closely related species share near-identical leaf morphology and are also toxic, requiring careful genetic or micro-characteristic differentiation
Wild garlic (Bear's garlic) Allium ursinum
Visually similar leaf structure; wild garlic releases a strong characteristic garlic scent when crushed, while Arum italicum does not, and Arum is highly toxic
Good King Henry Chenopodium bonus-henricus
Similar growing habitat and leaf shape; Good King Henry is edible, has large triangular leaves, and grows along walls and fences, unlike Arum italicum
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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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