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

Is Iris toxic to cats?

YES (TOXIC)
Unfortunately, Iris 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:Flag, Snake Lily, Water Flag
Scientific Name:Iris species
Family:Iridaceae
Toxic Principles:Pentacylic terpenoids (zeorin, missourin and missouriensin)
Clinical Signs:Salivation, vomiting, drooling,lethargy, diarrhea. Highest concentration in rhizomes.
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 Iris Toxic to Cats?

Introduction

Irises are beautiful flowers that can add charm and beauty to any garden or home. While they are generally safe for humans, there are concerns about their potential toxicity to pets, especially cats. As a responsible pet owner, it is important to know what plants are safe and what plants are toxic to your furry friends. In this article, we will explore the potential toxicity of irises to cats and the risks associated with their consumption.

What Are Irises?

The Iris genus contains over 260 species of perennial herbs with a wide range of flower colors and sizes. Irises are native to most regions of the world, including Eurasia, North America, and Northern Africa. They are widely cultivated for their beautiful flowers and are popular choices for gardens and floral arrangements.

Are Irises Toxic to Cats?

The answer to this question is not straightforward since the toxicity of irises depends on the specific species and the amount ingested. While some species of irises are safe for cats, others can be toxic and potentially fatal if consumed in large enough quantities. The American Society for the Prevention of Cruelty to Animals (ASPCA) lists certain species of irises as toxic to cats, including the Japanese, Siberian, and English iris. The toxic compounds in these species include glycosides and terpenoids, which can cause gastrointestinal upset, vomiting, diarrhea, salivation, and lethargy if ingested by cats. Although it is rare for cats to consume large amounts of irises, it is essential to keep them away from these plants. If you suspect that your cat has consumed any part of an iris plant, you should contact your veterinarian immediately.

What Are the Symptoms of Iris Poisoning in Cats?

If a cat ingests a toxic amount of irises, they may exhibit a range of symptoms depending on the severity of the poisoning. The typical symptoms of iris poisoning in cats include:
  • Gastrointestinal upset, including vomiting, diarrhea, and abdominal pain
  • Lack of appetite
  • Dehydration
  • Salivation
  • Lethargy and weakness
  • Incoordination and tremors (in severe cases)
  • Respiratory distress and collapse (in extreme cases)
If you notice any of these symptoms in your cat and suspect that they may have consumed irises, contact your veterinarian immediately or seek emergency medical treatment. Delayed treatment can lead to serious complications and even death.

Preventing Iris Poisoning in Cats

As a pet owner, it is your responsibility to prevent your cats from ingesting any toxic plants, including irises. Here are some tips to keep your cats safe:
  • Plant safe plants in your garden: Opt for cat-friendly plants and flowers such as catnip, catgrass, and spider plants.
  • Keep irises out of your cat's reach: Place irises in an area that is off-limits to cats or in a secured greenhouse or conservatory.
  • Monitor your cat's behavior: Keep an eye on your cats when they are outside and prevent them from eating or digging up plants.
  • Train your cats: Train your cats not to eat plants or flowers and provide them with alternative toys and treats.

The Bottom Line

Irises are beautiful flowers that can bring color and life to any garden or home. However, certain species of irises can be toxic to cats, causing gastrointestinal upset, vomiting, diarrhea, and even death if consumed in large enough quantities. If you suspect that your cat has ingested any part of an iris plant, contact your veterinarian immediately. As a responsible pet owner, take steps to prevent iris poisoning by keeping irises out of your cat's reach, monitoring their behavior, and providing them with safe plants and toys to play with.

References:

  • American Society for the Prevention of Cruelty to Animals (ASPCA). (n.d.). Iris. Retrieved from https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/iris
  • Dehghan, A. (2014). A Review on the Toxicity of Iris Species. Journal of Plant Biology & Soil Health, 1(1).
  • Shimizu, Y., & Kamiya, K. (2016). Poisoning by Plants, Mycotoxins, and Related Toxins. Animal Toxins, 385-395. doi:10.1007/978-3-319-20719-2_34
Search Again