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Is Jerusalem Oak toxic to cats?

YES (TOXIC)
Unfortunately, Jerusalem Oak 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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Additional Names:Feather Geranium, Ambrosia Mexicana
Scientific Name:Ambrosia mexicana
Family:Chenopodiaceae
Toxic Principles:Sesquiterpene lactones
Clinical Signs:Vomiting, anorexia, depression
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 Jerusalem Oak Toxic to Cats?

Keeping our feline friends safe and healthy is a top priority for cat owners. As they are naturally curious creatures, cats can get into all sorts of trouble, including ingesting plants that can be harmful to them. One such plant is the Jerusalem oak or Chenopodium botrys. Here, we will explore whether this plant is toxic to cats and what to do if your feline friend ingests it.

What is Jerusalem Oak?

Jerusalem oak, also known as feather geranium or sticky-willy, is a type of weed that grows in various parts of the world, including North America, Europe, and Asia. It can grow up to 60 centimeters in height and has green leaves that resemble feathers.

Is Jerusalem Oak Toxic to Cats?

Jerusalem oak is considered toxic to cats. The plant contains compounds called saponins, which can cause gastrointestinal problems, such as vomiting and diarrhea, when ingested in large amounts. Additionally, saponins can irritate the skin and mucous membranes, causing redness and itching.

It is essential to note that cats have different sensitivities to certain plants. Some cats may exhibit severe symptoms after ingesting a small amount of Jerusalem oak, while others may not show any symptoms at all. The severity of symptoms may also depend on the amount of plant material ingested and the cat's overall health.

What are the Symptoms of Jerusalem Oak Poisoning in Cats?

If your cat has ingested Jerusalem oak, you may notice the following symptoms:

  • Vomiting
  • Diarrhea
  • Loss of appetite
  • Depression
  • Irritation of the mouth, skin, or eyes

If you notice any of these symptoms in your cat, contact your veterinarian immediately for assistance. Depending on the severity of the symptoms, the veterinarian may recommend treatment with medications or hospitalization.

What to Do If Your Cat Ingests Jerusalem Oak?

If you suspect that your cat has ingested Jerusalem oak, make sure to contact your veterinarian immediately. Try to provide as much information as possible, such as the amount of plant material ingested, the time of ingestion, and any symptoms your cat is exhibiting.

If you can, try to remove any remaining plant material from your cat's mouth and wash their skin with soap and water if it has come into contact with the plant. Do not induce vomiting unless instructed to do so by your veterinarian.

Prevention is Key

The best way to keep your cat safe from Jerusalem oak poisoning is to prevent access to the plant altogether. Make sure to remove any Jerusalem oak plants from your garden or outdoor areas where your cat may roam. If you cannot remove the plant, make sure to monitor your cat closely while they are outside or consider using physical barriers to prevent access.

It is also essential to keep a watchful eye on your cat while they are inside your home. Some cat owners may have Jerusalem oak plants as part of their indoor garden or as decorative pieces. If you have such a plant, make sure to place it in an area that is inaccessible to your cat or find an alternative plant that is not toxic to cats.

Conclusion

Jerusalem oak is toxic to cats and can cause a range of symptoms, including vomiting, diarrhea, and skin irritation. If you suspect that your cat has ingested Jerusalem oak, contact your veterinarian immediately. The best way to keep your cat safe is to prevent access to the plant. With proper care and attention, you can keep your feline friend healthy and happy for years to come.

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