Is Monstera Toxic to Cats?

Monstera deliciosa

Monstera is in the same aroid family as pothos and contains insoluble calcium oxalate crystals. Chewing causes immediate pain, drooling and swelling of the mouth and tongue.

The large leaves are attractive to cats, and the plant is now one of the most common UK houseplants. The ripe fruit is also a risk, though it is rarely produced indoors.

Which parts are dangerous

• leaves
• stems
• sap
• unripe fruit

What to watch for in the UK

• A very common statement houseplant, sold in every size.
• Lower leaves are within easy reach of a cat.
• Aerial roots and stems are also irritant.
• Support poles do not protect the leaves.

If your cat has already chewed it

1. Rinse the mouth if the cat allows, offer water.
2. Phone your vet if breathing is noisy or the swelling is severe.
3. Watch for vomiting and drooling for a few hours.

Take a photo of the plant, and a cutting if you can do it safely — identification is half of the vet's decision. Out of hours, use your practice's emergency number. This page explains risk; it cannot diagnose your cat and it contains no home treatments.

If your cat has vomited after eating a plant, see the cat vomiting guide and, if there is blood, vomiting blood. For a general red-flag checklist, use sick cat symptoms. If the worry is food rather than a plant, the can cats eat guide covers 36 everyday foods.

Related plants

Browse the full UK plant checklist (72 plants).