toxic cat plants logo
Toxic Cat Plants
A fast and free database to keep your cat safe

Is Heartleaf Philodendron toxic to cats?

YES (TOXIC)
Unfortunately, Heartleaf Philodendron is toxic and potentially harmful to cats. We recommend you keep your feline friends away from this plant. See the table below for more information.
Search Again
Additional Names:Cordatum, Sweetheart Plant
Scientific Name:Philodendron hederaceum
Family:Araceae
Toxic Principles:Insoluble calcium oxalates
Clinical Signs:Oral irritation, pain and swelling of mouth, tongue and lips, excessive drooling, vomiting (not horses), difficulty swallowing
If you think your cat may have ingested a poisonous substance, call 888 426 4435 or your local vet
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Is Heartleaf Philodendron Toxic to Cats?

Heartleaf philodendrons (Philodendron hederaceum) are popular houseplants known for their trailing vines and heart-shaped leaves. They are easy to care for, making them a favorite among plant enthusiasts. However, if you have cats in your household, you may have concerns about the safety of this plant. This article will delve into the question of whether Heartleaf Philodendrons are toxic to cats and what you can do to keep your furry companions safe.

The Toxic Components in Heartleaf Philodendrons

According to the American Society for the Prevention of Cruelty to Animals (ASPCA), Heartleaf Philodendrons are considered to be toxic to cats. The leaves of this plant contain insoluble calcium oxalate crystals. If ingested, these crystals can cause oral irritation, pain, and swelling of the mouth, lips, and tongue of your cat. This can lead to excessive drooling, vomiting, and difficulty swallowing. In severe cases, it can cause airway obstruction, which can be life-threatening.

Although the leaves of Heartleaf Philodendrons contain calcium oxalate crystals, their toxicity level varies depending on the amount ingested by your cat. If your cat only nibbled on the leaf or licked the plant, the symptoms will likely be mild and resolve on their own. However, if your cat ingested a significant portion of the plant, you should seek medical treatment right away.

Symptoms of Heartleaf Philodendron Toxicity

If you suspect that your cat has ingested Heartleaf Philodendron, you should look out for the following symptoms:

  • Oral irritation and pain
  • Swelling of the mouth, lips, and tongue
  • Excessive drooling
  • Vomiting
  • Difficulty swallowing
  • Reduced appetite
  • Lethargy
  • Difficulty breathing (in severe cases)

If you notice any of these symptoms, you should contact your veterinarian right away. They may recommend inducing vomiting to eliminate the plant material from your cat's system or provide supportive care to manage the symptoms. In some cases, hospitalization may be necessary.

Preventing Heartleaf Philodendron Toxicity in Cats

The best way to keep your cat safe from Heartleaf Philodendron toxicity is to prevent them from accessing the plant. Here are some tips:

  • Place the plant out of reach of your cat. Heartleaf Philodendrons are known for their trailing vines, so make sure they are not hanging down within your cat's reach.
  • Create a physical barrier around the plant to keep your cat away. You can use a mesh screen or a plant hanger to create a barrier.
  • Teach your cat to stay away from the plant. You can use positive reinforcement techniques to train your cat to avoid the plant. Offer them treats and toys when they stay away from the plant.
  • Provide your cat with safe and appropriate toys and scratching posts to satisfy their need to chew and scratch.

By taking these preventive measures, you can ensure that your cat stays safe and healthy. If you must keep Heartleaf Philodendrons in your home, make sure to follow these guidelines strictly.

Conclusion

Heartleaf Philodendrons are a gorgeous addition to any home, but they can be toxic to your feline friends. The calcium oxalate crystals in the plant's leaves can cause oral irritation and other severe symptoms if ingested by cats. It is essential to take preventive measures to keep your cat away from the plant. If your cat displays any symptoms of Heartleaf Philodendron toxicity, seek medical treatment right away. With proper care and attention, you can keep your cat safe and healthy while enjoying your Heartleaf Philodendron plant.

Search Again