Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources

Arisaema triphyllum
Jack-in-the-pulpit is a woodland perennial known for its unique hooded spathe and spadix structure. It contains insoluble calcium oxalate crystals that cause irritation upon contact or ingestion.
Safety status
Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
Dogs that chew Jack-in-the-pulpit get a hard, fast lesson — the leaves and corm are packed with needle-like insoluble calcium oxalate crystals that puncture the lining of the mouth and throat on contact. Most dogs drop the plant immediately because of the pain, which limits how much actually goes down. Severe systemic illness is uncommon, but the oral burning is real and the dog will let you know.
Most common: heavy drooling and foaming, pawing at the muzzle, head shaking, vomiting, and refusing food. Lip, tongue, or throat swelling can develop within minutes. Watch for noisy or labored breathing — airway swelling is rare but a true emergency.
Onset is immediate — within minutes of chewing, per Pet Poison Helpline's profile of insoluble-oxalate plants. Oral pain usually eases within a few hours; any swelling and GI signs typically resolve in 12–24 hours with supportive care.
Call immediately if you see swelling around the muzzle, tongue, or throat, any breathing change, or repeated vomiting that prevents your dog from drinking. For drooling that subsides within an hour and otherwise normal behavior, call your vet or the ASPCA Animal Poison Control Center (888-426-4435) the same day for triage.
Rinse your dog's mouth with cool, fresh water and remove any leaf or root fragments still on the gums or tongue. Offering a small amount of milk to drink may help bind the irritant crystals (per VCA Animal Hospitals' general guidance for plant exposures with drooling). Do not induce vomiting unless your vet or the ASPCA Animal Poison Control Center tells you to. Call (888) 426-4435 or your vet for next steps.
Sources: ASPCA, Pet Poison Helpline, VCA Animal Hospitals.
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.
Dogs — concern notes
Common signs
Oral irritation, intense burning and irritation of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.
Escalation note
Ingestion typically results in immediate discomfort due to the needle-like crystals. Please consult your veterinarian if you suspect your dog has chewed or eaten any part of this plant.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
ASPCA Toxic Plant List
toxicology · 99% reliability
Jack-in-the-pulpit is toxic to both cats and dogs due to the presence of insoluble calcium oxalate crystals.
Yes, Jack-in-the-pulpit (Arisaema triphyllum) is toxic to dogs. It contains insoluble calcium oxalate crystals that cause immediate oral irritation, intense burning of the mouth, tongue, and lips, excessive drooling, vomiting, and difficulty swallowing upon chewing or ingestion.
Symptoms begin within minutes of chewing — dogs typically show heavy drooling and foaming, pawing at the muzzle, head shaking, vomiting, and refusal to eat. Swelling of the lips, tongue, or throat can develop rapidly. Oral pain usually eases within a few hours; GI signs typically resolve in 12–24 hours with supportive care. Airway swelling is rare but constitutes a true emergency.
Rinse your dog's mouth with cool, fresh water and remove any plant fragments from the gums or tongue. Offering a small amount of milk may help bind the irritant crystals. Do not induce vomiting unless directed by a vet or the ASPCA Animal Poison Control Center. Call (888) 426-4435 or your veterinarian for triage guidance.
All parts of Jack-in-the-pulpit contain insoluble calcium oxalate crystals — the needle-like crystals are present throughout the plant, including the leaves, roots, and the distinctive hooded spathe. Chewing any part releases the crystals directly into the mouth and throat tissue, causing immediate, intense irritation.
Same dog verdict

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