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The Most Toxic Plants for Cats, Keep Your Cat Safe

While cats may seem like they can take care of themselves, there are some plants that can be toxic to them. Aware of these plants, you can choose flowers safe for cats. Luckily, it’s easy to prevent your cat from eating these dangerous plants. It’s all about knowing what the dangerous plants are and making sure they’re not around for your cat to get into. Aware of these plants, you can choose flowers safe for cats.

Here, we list 10 of the most toxic plants that you should keep away from your feline friend. Make sure your environment has flowers that are safe for cats.

Opium Poppy

Opium poppies are the most poisonous plants in the world, and they are also one of the most painful. These plants are what you come across when you are on a walk in the park, but also, you should be cautious not to eat the poppies themselves, since they can be a severe poison. Amur cactus The Amur cactus is a pain causing plant that is also toxic to cats.

If your cat consumes the plant, the main symptom will be vomiting, diarrhea, and depression. Datura The poison from the Datura plant is called “Purple Death” and the most common symptoms would include vomiting and paralysis. It is extremely poisonous to cats. Vanda Seymor It is also known as the Bush Champaca or in French as the Plant de la fièvre d’Oribel’s, and it contains a powerful toxin called vandamine.


Oleander is not good for cats because of its flowers that smell a bit strange and can cause irritation. The leaves, berries, and seed pods contain a toxic substance called xanthone which can kill your cat in few hours, so use the chemical formulas that are available on the market to get rid of the poison.

Oleander is on the list of the top ten toxic plants for cats, so be careful when you are choosing the best plant to keep away your cats from this lethal flower. Rhododendron As we already mentioned above, a lot of Rhododendron plants are poisonous to cats, so it’s best to stay away from these plants. Pelargonium If you live in a flat, it’s recommended to keep these plants on a balcony or other elevated places.


Cat owners should be aware that those lovely flowers can potentially be toxic for cats. Daffodils, for example, can cause stomach upsets, vomiting, or worse if your cat eats the foliage, flowers or pods. Other plants you may not suspect, like aloe vera, can be toxic for cats as well. Some pet owners have reported that these toxic daffodils have killed their pets.

English Yew

This invasive plant can cause kidney failure in cats. This tree can grow up to 15 meters high and it has leaf blades that are similar to the blades of an umbrella. When they sprout up, the leaves can cause the stomach to swell, making it difficult for the cat to swallow. Trees in the genus Anacardium, such as Black Locust, Cycas, and Datura, are especially toxic to cats and can cause skin and kidney damage.

They can also lead to depression in cats. If you have a tree that is toxic to your cat, you will need to consult with a local arborist to remove it. Queen Anne’s Lace (Achillea millefolium) This plant can cause joint pain, liver inflammation, and respiratory issues. In severe cases, this plant can cause blindness and even death.


The yew is a common evergreen tree that is toxic to all animals including cats. Grown for its ornamental qualities, it is from the plant family Taxaceae and common names include Japanese yew, Chinese yew, and English yew. All parts of the plant, except the seed covering, are toxic including evergreen foliage and succulent red berries which contain taxine, an extremely toxic plant compound to cats and other animals. If ingested, muscle tremors, seizures, respiratory distress, and cardiac failure resulting in death can occur.


Azaleas, also called Rosebay or Rhododendron, are common plants in outdoor landscaping. Despite their beauty, they can be toxic if eaten by dogs, cats, rabbits, reptiles, pigs, horses, and goats (to name a few!). The toxic component of Azaleas is called Grayantoxin. This toxin affects the body’s sodium channels which then affect the muscle tissue of the heart and skeletal muscles.

All parts of the plant are poisonous and even small volumes can cause clinical symptoms to develop. Your pet only needs to ingest 0.2% of their body weight to become ill. This means a 30-pound dog only needs to eat about 0.5oz to 1oz of the plant to get sick.

Dieffenbachia (Dumb Cane)

This plant can induce vomiting and can make it difficult to breathe. It can also cause excessive drooling and skin irritation. Anticoccus This plant may cause respiratory difficulties. It can induce vomiting and excretion of stomach contents. If your cat ingests this plant, it may have trouble breathing.

Caution: If your cat ingests this plant, immediately discontinue its use as a litter box. Chamomile This plant can cause vomiting and diarrhea and other gastrointestinal issues. If your cat ingests it, it can cause vomiting and diarrhea. Careful when giving your cat water with the tea that you use for your tea leaves to avoid vomiting. Careful if you are using this tea for any reason.


This is a common indoor plant found in pots and drawers all over the home. Its toxic reaction to light and petting has been reported, making it a tempting cat-roast in a matter of seconds. The problem lies with its very hard or prickly leaves, which are especially hard to wash off. Don’t buy this plant, and if you have one that is stuck on your windowsill, remove the petals immediately.

Balm of Gilead Known as an expensive hedge and smoky patch plant, Balm of Gilead is a smelly flowering shrub, and its potent fumes can be fatal for your cat. It is poisonous in large doses and its sharp leaves can injure your kitty if he manages to eat or inhale a few. You can buy this in gardening stores or on the internet. Kumquat This small but mildly toxic fruit or tree is commonly found in the US.


These plants are toxic to cats if consumed. Some of their symptoms include vomiting, diarrhea, loss of appetite and even seizures. It is not recommended that your cat eat the berries of this plant since they can cause dehydration, salivation, and paralysis.

If your cat consumes this plant, there are various symptoms that will appear, including vomiting, lethargy and kidney failure. Popcorn plants The seeds of this plant are very toxic to cats. There are symptoms like difficulty breathing and seizures, if your cat eats them. It can be fatal if ingested.


Geranium is found in the Asteraceae family. It grows in hot climate like Southern and Eastern Africa and Western and Central America. Geranium plants are typically grown as ornamental plants. They also are often used for herbal tea to cure aches and pains. It is thought that this is due to geranium’s alpha-tocopherol and beta-carotene content. However, the chemical compounds in the plants can be toxic to cats.

Cat problems associated with geranium are dryness of the mouth and vomiting. Some cats even develop osteomyelitis in the mouth. Symptoms of the disease include pain and swelling in the mouth. It is important that geranium is kept away from cats. Geranium should not be used in houseplants or plants where there is a risk of inhaling toxins or getting cut.

Flowers Safe for Cats

We’ve compiled a list of plants and flowers safe for cats and pets in this related article.

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