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Is Rex Begonia toxic to cats?

YES (TOXIC)
Unfortunately, Rex Begonia 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.
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Scientific Name:Begonia rex
Family:Begoniaceae
Toxic Principles:Soluble calcium oxalates
Clinical Signs:Kidney failure (in grazing animals), vomiting, salivation in dogs/cats. Most toxic part is underground.
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 Rex Begonia Toxic to Cats: Understanding the Risk and Precautions

Cats are adorable creatures and they make great companions. As a cat owner, it is important to ensure that your pet stays safe and healthy at all times. One way to do this is by being aware of the plants and flowers that can pose a threat to your furry friend. Rex Begonia is a popular houseplant that brings a splash of color to any room, but is it safe for your cat? In this article, we will explore the potential toxicity of Rex Begonia to cats and how to keep your pet safe.

What is Rex Begonia?

Rex Begonia is a genus of plants that are popular for their stunning foliage. They belong to the Begoniaceae family and are native to tropical regions of Asia, Africa, and America. Rex Begonias are grown for their decorative leaves, which come in several colors and patterns. They are also easy to grow, making them a popular choice for both novice and experienced gardeners.

Is Rex Begonia Toxic to Cats?

While Rex Begonia is not listed as toxic to cats by the ASPCA, it is important to note that ingestion of certain parts of the plant can cause mild to severe symptoms in felines. The leaves of the Rex Begonia plant contain insoluble oxalates, which can cause irritation and burning sensation if ingested. The sap of the plant can also cause skin irritation.

If your cat has ingested Rex Begonia leaves, they may experience symptoms such as drooling, vomiting, and diarrhea. In severe cases, ingestion of Rex Begonia leaves can cause difficulty breathing and throat swelling. If you notice any of these symptoms, it is important to seek veterinary attention immediately.

Precautions to Keep Your Cat Safe Around Rex Begonia

If you have Rex Begonia in your home and you also have a cat, it is important to exercise caution to keep your furry friend safe. Here are some precautions to consider:

Keep Rex Begonia Out of Reach

The best way to keep your cat safe from the potential hazards of Rex Begonia is by keeping the plant out of reach. Place the plant in an area where your cat cannot access it, such as on a high shelf or in a room that is off-limits to your cat. You can also use wall-mounted hooks or plant stands to elevate the plant.

Use Deterrents

Cats are curious creatures, and they love to explore. If you are unable to keep the Rex Begonia out of reach, you can use deterrents to discourage your cat from nibbling on the leaves. You can use citrus-scented sprays, bitter apple sprays, or double-sided tape to make the leaves less attractive to your cat.

Grow Cat-Friendly Plants Instead

If you are worried about the safety of your cat around Rex Begonia, you can consider growing cat-friendly plants instead. There are many plants that are safe for cats and also easy to grow, such as spider plants, Boston ferns, and African violets.

Conclusion

Rex Begonia is a stunning plant that can brighten up any room. While it is not toxic to cats, it is important to keep in mind that ingestion of certain parts of the plant can cause mild to severe symptoms in felines. As a cat owner, it is your responsibility to ensure that your pet stays safe and healthy. By taking the necessary precautions and being aware of the potential hazards, you can enjoy the beauty of Rex Begonia while keeping your furry friend safe.

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