Peace Lily — (c) Dick Culbert, some rights reserved (CC BY)
Photo by (c) Dick Culbert, some rights reserved (CC BY)iNaturalistCC BY
dog safety reference

Is Peace Lily safe for dogs?

Spathiphyllum

The Mauna Loa Peace Lily is a popular indoor plant known for its elegant white spathes and lush foliage. It contains insoluble calcium oxalate crystals that can cause irritation upon contact or ingestion.

Peace LilySpathSpathiphyllumWhite Sails
Light
Low to medium indirect light
Habit
Clumping herbaceous perennial
Care
Moderate

Safety status

Dogs

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 dog

Peace lily is not a true lily, and it doesn't carry the kidney-failure risk dogs face from sago palm or grapes. What it does carry is a load of insoluble calcium oxalate crystals — microscopic needles that punch into a dog's lips, gums, and tongue the instant she bites a leaf. The pain and drool are dramatic, but most dogs recover fully with supportive care once the crystals are flushed out.

What to watch for

Sudden pawing at the muzzle, head shaking, and intense drooling within minutes of chewing. Common follow-on signs: vomiting (often bringing up leaf material), reluctance to eat, and visible discomfort around the mouth. Less common but more serious: noticeable swelling of the lips, tongue, or throat, or any change in breathing.

Time window

Onset is fast — minutes to a couple of hours. With basic supportive care, signs typically resolve within 1–3 days.

When to call the vet

Call your vet or Pet Poison Helpline (855-764-7661) for persistent drooling, repeated vomiting, refusal to drink, or any swelling of the mouth. Treat any difficulty breathing, loud or labored swallowing, or collapse as an emergency and go directly to a clinic.

First aid at home

Pull any remaining plant material out of your dog's mouth and rinse the mouth with clean, cool water to flush out the crystals. Do NOT induce vomiting — bringing the oxalate material back up causes additional burning to the esophagus and mouth. Then call your vet or Pet Poison Helpline for guidance.

Sources: ASPCA, Pet Poison Helpline.

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.

Dogsconcern notes

Common signs

Oral irritation, intense burning and irritation of the mouth, tongue and lips, excessive drooling, vomiting, and difficulty swallowing.

Escalation note

The insoluble calcium oxalate crystals cause immediate mechanical irritation. If your dog shows signs of distress or has ingested the plant, please contact your veterinarian for professional guidance.

Safer alternatives

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Peace Lily contains insoluble calcium oxalate crystals that cause oral irritation.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Spathiphyllum is a genus of monocotyledonous herbaceous perennial plants in the family Araceae, native to tropical regions of the Americas and southeastern Asia.

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