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Is Boxwood toxic to cats?

YES (TOXIC)
Unfortunately, Boxwood 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:Buxus spp.
Family:Buxaceae
Toxic Principles:Alkaloids
Clinical Signs:Dogs and cats: vomiting, diarrhea; Horses: colic, diarrhea, respiratory failure, seizures
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 Boxwood Toxic to Cats: Facts and Myths

Introduction

Boxwood is a popular evergreen shrub commonly used for landscaping and gardening purposes. It is often found in residential and commercial yards, gardens, and parks. While boxwood is known for its attractive foliage and ability to withstand harsh conditions, there have been concerns about its toxicity to cats.

Many people believe that boxwood is poisonous to cats, and some even claim that cats have died after ingesting parts of the plant. However, others argue that the toxicity of boxwood to cats is a myth and that the plant is not harmful to felines. In this article, we will explore the facts and myths surrounding boxwood and its potential effects on cats.

What Is Boxwood?

Boxwood, also known as Buxus, is a genus of evergreen shrubs or small trees that belong to the Buxaceae family. There are approximately 70 species of boxwood, but the most commonly used for gardening and landscaping purposes is Buxus sempervirens, also known as common boxwood.

Boxwood is native to Europe, Asia, Africa, and South America and is widely cultivated in temperate regions around the world. It is a slow-growing plant that can reach a height of up to 20 feet, but it is often pruned to form hedges, topiaries, and other shapes.

Boxwood Toxicity to Cats: The Facts

So, is boxwood toxic to cats? The answer is yes and no.

According to the ASPCA (American Society for the Prevention of Cruelty to Animals), boxwood is toxic to cats, dogs, and horses. The leaves, stems, and twigs of boxwood contain alkaloids, which are toxic to these animals when ingested in large quantities.

The symptoms of boxwood poisoning in cats can vary depending on the amount ingested and the size of the cat. The most common signs include:

  • Vomiting
  • Diarrhea
  • Abdominal pain
  • Lethargy
  • Loss of appetite
  • Tremors
  • Abnormal heart rate
  • Seizures

If you suspect that your cat has ingested boxwood, you should contact your veterinarian immediately. Treatment may include inducing vomiting, administering activated charcoal, and providing supportive care.

It is important to note that while boxwood is toxic to cats, it is not usually lethal. Most cats recover from boxwood poisoning with prompt treatment and supportive care.

Boxwood Toxicity to Cats: The Myths

Despite the scientific evidence that boxwood is toxic to cats, there are still some who believe that the plant is not harmful to felines. Some people claim that their cats have been exposed to boxwood without any negative effects.

There are several possible reasons for this discrepancy. Firstly, not all cats are attracted to boxwood. Some cats may avoid the plant or simply not be interested in it. Secondly, the severity of boxwood toxicity can vary depending on the individual cat and the amount ingested. A small amount of boxwood may not cause any noticeable effects in some cats, while a larger amount may cause severe symptoms.

Furthermore, some people may mistake the symptoms of boxwood poisoning for other conditions or illnesses. For example, vomiting and diarrhea can be caused by a range of factors, including dietary changes, infections, and parasites. Without a clear diagnosis from a veterinarian, it can be difficult to determine whether these symptoms are due to boxwood ingestion.

How to Protect Your Cat from Boxwood Toxicity

If you have boxwood in your yard or garden and you have a cat, there are several steps you can take to reduce the risk of toxicity:

  • Keep your cat away from boxwood plants. This may involve fencing off certain areas or using physical barriers to prevent your cat from accessing the plants.
  • Supervise your cat when they are outside to ensure they do not eat or play with boxwood plants.
  • Consider using alternative plants in your yard or garden that are safe for cats. There are many cat-friendly plants that can add beauty and interest to your outdoor spaces.
  • If you suspect that your cat has ingested boxwood, seek veterinary care immediately, even if they are not showing any symptoms.

By taking these precautions, you can help to protect your cat from the potential hazards of boxwood toxicity.

Conclusion

Boxwood is a popular landscaping plant that is toxic to cats, dogs, and horses. While the severity of boxwood toxicity can vary depending on the individual animal and the amount ingested, it is important to take steps to reduce the risk of exposure. By keeping your cat away from boxwood plants and seeking prompt veterinary care if you suspect ingestion, you can help to keep your feline companion safe and healthy.

Sources:

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