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Toxic Cat Plants
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Is Seven Bark toxic to cats?

YES (TOXIC)
Unfortunately, Seven Bark 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:Hydrangea, Hortensia, Hills of Snow
Scientific Name:Hydrangea arborescens
Family:Hydrangeaceae
Toxic Principles:Cyanogenic glycoside
Clinical Signs:Vomiting, depression, diarrhea. Cyanide intoxication is rare - usually produces more of a gastrointestinal disturbance.
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 Seven Bark Toxic to Cats?

Cats are beloved pets for many people, and their owners want to make sure they keep their furry friends healthy and safe. With their curious nature, cats may sometimes nibble on plants they find in their environment. It is essential to know whether a plant is safe for cats before bringing it into your home. Seven Bark is a plant commonly found in gardens and landscapes, and many cat owners may wonder whether it is toxic to their pets.

What is Seven Bark Plant?

Seven Bark, also known as Hydrangea arborescens, is a deciduous shrub native to North America. It is a popular landscaping plant due to its showy white or pink flowers that bloom in the summer. The shrub is called Seven Bark because of its peeling bark, which appears in up to seven layers. Seven Bark is a hardy plant, able to withstand harsh weather conditions and is easy to care for, making it an excellent choice for gardeners.

Is Seven Bark Toxic to Cats?

According to the ASPCA, Seven Bark is toxic to cats. The plant contains cyanogenic glycosides that can release cyanide when ingested by cats. Cyanide is a deadly poison that can cause serious health issues or even death in cats. Symptoms of cyanide poisoning include vomiting, diarrhea, difficulty breathing, dilated pupils, seizures, and even coma. If you suspect your cat has ingested Seven Bark, take it to the veterinarian immediately.

What are the Alternatives to Seven Bark?

If you are a cat owner and want to add some attractive plants to your garden or home, it is crucial to learn about cat-safe plants. Here are some alternatives to Seven Bark that are safe for cats:

  • Pink Jasmine
  • Spider Plant
  • African Violet
  • Boston Fern
  • Parlor Palm

Conclusion

As a cat owner, it is vital to be aware of the plants that are toxic to your pet. Seven Bark is a plant that contains cyanogenic glycosides and is poisonous to cats. Symptoms of cyanide poisoning include vomiting, diarrhea, difficulty breathing, dilated pupils, seizures, and even coma. If you suspect your cat has ingested Seven Bark, take it to the veterinarian immediately. To keep your cat safe, choose cat-safe plants like Pink Jasmine, Spider Plant, African Violet, Boston Fern, or Parlor Palm instead.

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