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.

Is Oxalis (Shamrock Plant) Toxic to Cats? Vet-Reviewed Facts & FAQ

Share

Catster_Is Oxalis Shamrock Toxic to Cats

When we mention shamrocks, you might think of clovers too, but what is the difference? Well, all shamrocks are clovers, but not all clovers are shamrocks. The clovers that pop up across your lawn are harmless little weeds, while the Oxalis (or shamrock plant as it’s also known) is generally grown indoors or in gardens. Unfortunately, these pretty little plants are poisonous to cats.

Keep reading to find out everything you’ll need to know about this species and how it can harm your cat. We’ll also examine how to identify poisoning in your pet in the unfortunate event your bored feline takes a few bites out of the shamrock plant.

divider cat paws 2 oct 2024

About the Shamrock Plant

Shamrocks are known for their delicate flowers and trifoliate leaves. To help identify them, you should know that they come under different names, such as sorrel, purple shamrock, and love plant.

Plants in the Oxalis genus contain oxalic acid and oxalate salts, which act as a self-defense mechanism against animals and pests that try to eat them. Oxalic acid can occur in a plant either in a soluble or insoluble form, and shamrocks contain soluble oxalate crystals, which is the more harmful of the two options.

It can cause hypocalcemia, which is a drop in the body’s calcium levels, and kidney damage. Your cat could also suffer gastrointestinal irritation as the soluble oxalate crystals move through their tract.

Thankfully, the shamrock plant has a particularly bitter taste, which will often deter your cat from ingesting large quantities. However, it’s vital to know which signs you should look out for in case your cat eats the leaves.

divider cat paws 2 oct 2024

Signs & Treatment

cat with intravenous infusion drip in vet clinic
Image Credit: Yekatseryna Netuk, Shutterstock

The signs your cat exhibits will depend on how much of the plant has been ingested and how healthy they are. Cats with kidney problems, for example, are at an increased risk of severe and potentially fatal side effects. Most cats will not usually ingest too much of the plant, thanks to the bitter taste, so their signs may only be mild.

Signs to be on the lookout for are:
  • Drooling
  • Lack of appetite
  • Lethargy
  • Bloody urine
  • Changes in thirst and urination
  • Diarrhea
  • Tremors
  • Vomiting
  • Weakness

Contact your vet immediately if you catch your feline eating a shamrock plant. While it is rarely fatal, it’s still a good idea to get professional advice regarding Oxalis poisoning.

If you take your cat to the vet before it vomits, it may induce vomiting to get the plant out of your cat’s system. They may also administer medication that will bind with the harmful compounds in your cat’s system to make them less dangerous.

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

How to Avoid Shamrock Poisoning

The best way to avoid shamrock poisoning is to remove it from your house or garden. Of course, it’s not always within your control. If you have an outdoor cat, they may come into contact with Oxalis away from your property. Thankfully, as we said, the oxalates in the plant give it a nasty bitter flavor that will probably deter your pet.

If you already have a plant in your home, keep it somewhere your cat can’t get to, like on a high shelf or in a secure room your cat cannot access.

We also recommend, regardless of the plant’s species, emptying the water that accumulates in your plant’s catch basins after they’ve been watered to prevent your cat from drinking it. If you’re unsure about adding a new plant to your home, you can always ask your vet for advice or visit the ASPCA’s toxic and non-toxic plant list.

dedicated plant room to keep away from cats
Image Credit: Unsplash

divider cat paws 2 oct 2024

Conclusion

The relationships you have with your cat and plants can be a tricky road to navigate. No matter the species, even a non-toxic houseplant can give your cat a sore tummy if it consumes too much, and the thought of a plant you’ve brought home hurting your feline friend is horrifying.

This doesn’t mean you remove all your plants. If you research your houseplants before buying them and cat-proof your non-toxic varieties, your feline can live safely with your flora.


Featured Image Credit by: Olena758, 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

What Feral Cats Actually Need From the People Who Feed Them

Feral cats are everywhere. Slipping between parked cars, darting under porches, appearing briefly at dusk before vanishing again. Most people see them, feel...

Capturing Catstanbul

Istanbul – famous for its bustling markets, unique architecture, and vibrant culture, there is one more feature of this Mediterranean capital that deserves...

Ask Dr. Paola – Help! My Male Cat Gets Into Fights! (March 9, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Why Your Cat’s Poop Smells Like a Biohazard

Nobody enjoys litter box duty, but sometimes it gets unbearable. The smell hits you from across the room. You’re scooping faster, lighting candles,...

More related

Can Cats Eat Collard Greens? Vet-Approved Nutrition Advice

Plain collard greens are perfectly fine for cats to eat. They provide a good source of fiber, along with nutrients and minerals. Cats...

But What About Second Breakfast? When My Cats Think They’re Hobbits

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

Inappropriate Elimination In Cats: Vet-Approved Guide & Explanation

Cats usually are pretty good about going to the bathroom in their litter boxes, but some occasionally veer off course and start peeing...

16 Pet Insurance Facts & Statistics in 2026 (Vet-Reviewed)

Note: This article’s statistics come from third-party sources and do not represent the opinions of this website. Pets are as important a part...

Keep reading

Why Is My Cat Stalking Me? Vet-Approved Behavior Explanation

Cats stalk their prey, stalk their toys, and sometimes even stalk their food. However, what concerns many cat owners is when their cats decide to stalk them. You’re probably familiar with the behavior of a cat stalking and pouncing. They...

woman sitting beside her cat

Will a Male Cat Mate With a Female if She’s Not in Heat? Vet-Reviewed Feline Behavior Explanation

As cat parents, we know that female cats mate when in heat, but what about male cats? They don’t go into heat like females, so when do they mate? Will they mate with a female if she isn’t in heat?...

Black-and-white-Thai-cats-with-bell-collars

Do Cat Paw Pads Grow Back? Vet Approved Facts & FAQs

Cats are curious, active creatures adept at using their sharp eyes, noses, and ears to explore the world. But they also use information gathered from the hyper-sensitive nerves in their whiskers and paws! Cat paws are packed with delicate nerve...

Cat paw pads

Can Cats Eat Dragonflies? Vet Approved Facts & FAQ

Cats love to chase things, especially things that fly quickly. It is one reason why so many birds die due to domestic cats every year (which can actually become a serious problem in some areas). Dragonflies are another animal that...

Can Cats Eat Dragonflies

Why Does My Cat Bite My Ear? 10 Vet-Verified Reasons

Cats have long intrigued us with strange behaviors. One of the more unusual and often perplexing behaviors that some cats exhibit is the act of biting their owner’s ears. While cats are known for their enigmatic nature and instinctive habits,...

cat on woman's shoulder by head bite hair

Can a Dog Get a Cat Pregnant? Vet-Reviewed Facts & FAQ

While dogs are, without a doubt, man’s best friend, they can also exhibit strange behavior. They eat plants from the garden and sleep in awkward positions, but one of the most bizarre behaviors you may witness is your dog mounting...

Savannah Cat hugging a dog

What Can Cats Eat Besides Cat Food? Vet-Verified Nutrition Guide

When it comes to being a responsible cat parent, there is no worse feeling than getting home from the grocery store and unpacking everything, only to find you forgot the cat food! And that’s before your cat starts giving you...

tabby cat eating fresh food

Can Cats Eat Crawfish? Vet-Reviewed Risk & Benefits

It’s no secret that felines are seafood lovers. Crawfish might seem safe for your cat, and you might consider giving them a sample. While a small taste of cooked, adequately prepared crawfish won’t hurt your cat, it’s not an ideal...

Can Cats Eat Crawfish

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.