Is Heartleaf Philodendron Toxic to Cats?

Yes — Heartleaf Philodendron is moderately toxic to cats

The Heartleaf Philodendron is one of the most popular trailing plants for beginners. Unfortunately, like all philodendrons, it contains calcium oxalate crystals that cause immediate oral irritation and swelling when chewed.

Symptoms in Cats

If your cat eats Heartleaf Philodendron, watch for these symptoms (onset: Immediate):

Oral pain
Drooling
Pawing at mouth
Swelling of lips and tongue
Difficulty swallowing
Vomiting

What To Do

Rinse mouth thoroughly. Offer cold water or milk. Monitor breathing — seek emergency care if swelling appears to obstruct airways.

Cat-Safe Alternatives to Heartleaf Philodendron

✓ Spider Plant ✓ Boston Fern ✓ String of Hearts

Quick Facts

Scientific Name

Philodendron hederaceum

Also Toxic to Dogs?

Yes (moderate)

Toxic Compound

Insoluble calcium oxalate crystals

Toxic Parts

leaves, stems

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Heartleaf Philodendron toxicity profile.