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"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

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BRIEF: Could you tell me if Peace Lily is poisonous?

I have a cat and am concerned that a plant we received might be poisonous. I am unable to find information regarding whether it is or not. Could you, would you be kind enough to provide that information? The plant is commonly known as a peace lily or spathiphyllum. Thank you for your assistance.


I would expect the cat's mouth to be irritated locally or even swollen a bit if he/she chewed on the peace lily, but nothing fatal has ever been reported and I doubt your cat would try it twice...