Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Are Irises Poisonous to Cats? Vet Approved Facts & Safety Tips

Catster_Are Irises Poisonous to Cats

You likely know how it feels when you discover that your cat has eaten something and you have no idea whether it’s safe. Things that kitties seem quite fond of include plants and flowers, which are common in households. While certain ones are fine for them to eat, many others aren’t safe.

One such flower is the iris. Beautiful as it may be, irises are toxic to cats. While the consequences of eating irises can range from mild to moderate, they will put your cat in a great deal of discomfort. But what exactly is it about the iris that makes it so bad for our four-legged friends, and what will the outcome be if it’s eaten?

Here’s everything that you need to know about iris poisoning, its clinical signs, and how you can keep your cat from getting into this lovely but poisonous flower.

divider 3 paws

What Is Iris Poisoning?

Iris poisoning occurs when your cat ingests any part of the iris, though the worst part for them to eat is the bulb and rhizomes, as these are where more of the toxic components are. What are these toxic components? They’re known as pentacyclic terpenoids (missourin, missouriensin, and zeorin, to be precise).

Ingesting these can cause tissue irritation, which can be mild to moderate depending on how sensitive your feline is to the terpenoids. These signs will be uncomfortable for your cat, no matter how severe, though.

sick cat lying on blanket
Image credit: one photo, Shutterstock

What Are the Signs of Iris Poisoning?

Iris poisoning has a handful of signs to watch out for, including:
  • Lethargy
  • Vomiting
  • Diarrhea
  • Drooling
  • Stomach pain
  • Ulcers in the mouth
  • Irritation to the skin of/around the mouth

If you notice these in your kitty, get them to a vet straight away. These are signs of many health conditions, though, so if you didn’t see your cat eat an iris, but these signs are being exhibited, your vet can still provide the necessary treatment for your cat.

Treatment for this can include inducing vomiting or washing out the mouth to get rid of the poison, giving your cat fluids if they are dehydrated from throwing up, or giving your pet medication to help them stop vomiting.

Consulting a veterinarian is recommended for the best course of action.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider 3 paws

How to Keep Your Cat From Eating Irises

The safest and simplest solution to keep your cat from eating irises is to get rid of them. However, we understand you may want to keep them around. If tossing them isn’t an option, there are other ways you can keep your cat away from the plant.

If irises are indoors, you can place them way up high where your cat can’t reach them or in a room the cat isn’t allowed in. Wherever you place them, be sure you check them regularly for dropped leaves or flowers, so you can remove them before your pet can get to them.

close up purple iris flower
Image Credit: Jacques GAIMARD, Pixabay

If your irises are outdoors in a garden, it will be much harder to ensure your cat can’t eat them (unless your cat is indoors only). However, you could try spraying the irises with a mixture of water and citrus fruit (orange, lime, or lemon juice) since cats don’t enjoy the scent or smell of citrus. You could also try spraying a bit of apple cider vinegar in the soil near your plants, as cats don’t like its smell either. Or you could try putting up netting or something similar around your plants.

Another option to consider is gifting your feline a garden of their very own that contains cat-friendly plants, such as catnip or cat grass. An area of plants your pet loves could keep them away from what they shouldn’t have.

divider 3 paws

Final Thoughts

If you have irises in your home and your cat gets into them, it could end in a very uncomfortable experience for them. Eating any part of the iris can lead to iris poisoning, resulting in gastrointestinal issues, lethargy, skin irritation, and more. If you suspect your feline has eaten an iris, get them to a vet right away for treatment. Treatment might involve making them vomit or intravenous fluids if they ate too much of the plant. Although your kitty may be miserable for a time, they should be fine after treatment.

You can also try to keep your cat out of any irises in the first place to avoid such a situation. Getting rid of this plant is the easiest way to do this, but there are other options if you are unable to do so. You can keep it out of reach or make it smell like something that your kitty hates. You can even set up a cat-friendly garden that they can have all to themselves! With a bit of time, your pet should realize that irises are off-limits, and iris poisoning can be avoided.


Featured Image Credit: GAIMARD, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.


How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

7 Best Calming Collars for Cats in 2026 – Reviews & Top Picks

Cats suffering from anxiety and stress can misbehave, act aggressively, and even develop health problems that can include diarrhea. It’s not always easy...

Evanger Cat Food Review in 2026: Reviews, Pros & Cons

Review Summary At first glance, this brand looks very high-quality. It is a bit more expensive, but you’re paying for extra meat and...

How to Get a Cat’s Attention: 12 Vet-Approved Tips & Methods

Have you ever sat and watched your cat walk around you like you weren’t even there? If so, don’t feel lonely. This is...

Olga and the Vacuum: How I Helped Her Cope

Hi, I’m Christopher! Read my introduction to learn more about me and my silly Russian Blue cat, Olga. Although she can tolerate thunderstorms...

More related

Fever Coat in Kittens: What Is It? Vet Reviewed Science & Facts (With Pictures)

Do you have a kitten that seems to have mysteriously changed colors? If so, they may have a fever coat. Although “fever coat”...

The Cat Cafe Interview Part Two: We Chat with KitTea Co-Founder Courtney Hatt

Running a cafe or restaurant is hard work. I know this partly from waiting tables for four years at a San Francisco diner...

Made by Nacho Cat Food Review 2026: Recalls, Pros & Cons

Review Summary Made by Nacho is a love letter from celebrity chef Bobby Flay to his gorgeous orange tabby, Nacho, and his other...

Dr. Elsey’s Cat Food Clean Protein Review 2026: Recalls, Pros & Cons

Review Summary In 1987, Dr. Elsey and his wife Kathy founded the Dr. Elsey company. The entire idea was to extend help to...

Keep reading

Can Cats Be Allergic to Dogs? Vet-Approved Facts & FAQ

Cats can be allergic to certain food ingredients, flea saliva, dust mites, molds, and even outdoor particles like pollen from trees, grass, and weeds. Itchy skin, gastrointestinal problems, and even difficulty breathing can all be caused by allergies. If you...

Jack russell terrier dog and irritated white cat on the bed

5 Best Litter for Cats with Asthma in 2026 – Reviews & Top Picks

It can be tough to parent a cat with asthma, particularly because of cat litter. The tiny particles and dust that get kicked up when a cat litter box is being cleaned can really affect asthma-suffering cats. Many people therefore...

kitten in the litter box

How to Clean a Cat Bowl: 8 Easy Steps & Vet-Reviewed Precautions

A cat bowl is easily one of the most important pieces of equipment for a cat owner. Just like humans, cats are affected by food-borne illnesses, most commonly caused by bacteria such as Salmonella, E.coli and Listeria. These illnesses can...

hepper nom nom cat bowl

Where to Find a Healthy, Happy Purebred Kitten – Without the Risks

Last fall, Sarah fell in love with a tiny silver tabby online. In the photo, the kitten was curled in a wicker basket, one paw draped lazily over the edge, eyes bright with curiosity. The breeder promised she was “ready...

Do Male Cats Have Nipples? Vet-Reviewed Feline Anatomy Facts

If you’ve never owned a male cat, this may be a question that you’ve asked yourself. Female cats need nipples to feed their babies if they ever have a litter of kittens. But do male cats have nipples as well?...

Ginger cat lying on its back

Can Cats Eat Squid? Vet-Approved Nutrition Facts, Risks & Feeding Info

Squid isn’t common table fare in all locations, but depending on where you’re at, it might be a popular dish. In America, squid is most commonly served fried with a side of marinara sauce in a dish known as calamari....

Can Cats Eat Squid

Does Peppermint Oil Kill Fleas on Cats? Vet-Reviewed Effectiveness & Safety

Over the past decade, there has been an increased interest in using essential oils, including peppermint oil, to control fleas and ticks on pets. However, there is little evidence to support its effectiveness and safety on felines as a flea...

peppermint oil

Can Cats Catch Colds From Humans? Vet Approved Facts & Advice

For most of us, our pets are our pride and joy, and we wouldn’t want to do anything to endanger them, which is why many people worry that when they catch a cold, they might pass it on to their...

man sick with cat beside him