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What are the Most Poisonous House Plants?

It is generally safe to grow plants at home. Houseplants give color, filter the air, and are either edible or therapeutic. Children and dogs, on the other hand, are more likely to chew or harm plants. Then there are a few poisonous plants to avoid in your home. They irritate the skin and disturb the stomach. Children, pets, and elderly people with dementia are all at risk from toxic plants.



Its sap causes the tongue to burn and swell, obstructing airflow to the throat. If taken in excessive quantities, it can be harmful to both humans and pets. Thick stems and meaty, solid-green leaves characterise this plant.

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Lilies aren’t all poisonous. Some are more toxic to animals, particularly cats than they are to people.

Toxic Lilies come in a variety of forms, including Calla Lily, Easter Lily, Rubrum Lily, Tiger Lily, Day Lily, and Asian lily. It causes stomach discomfort, vomiting, headaches, impaired vision, and skin irritation in humans. In cats, however, all components of the plant are believed to be harmful. Vomiting, tiredness, and a lack of appetite are common symptoms. Renal or liver failure can also occur, and if left untreated, can result in death.


Daffodil bulbs can irritate the tongue and throat, as well as produce nausea, vomiting, and diarrhoea if consumed. Dermatitis can be caused by frequent skin contact.

Arrowhead Plant

Young Arrowhead plants are another harmful indoor plants that have heart-shaped leaves and are bushy. Climbing stems are produced by older plants. It causes itchy skin, vomiting, and stomach trouble in people and animals.

Also Read: Care Tips For Indoor Plants



Philodendron causes rashes and swelling of the mouth and digestive tract in people. It is also among the house plants poisonous to pets. Spasms, convulsions, discomfort, and swelling are some of the most serious side effects that pets experience.


It is regarded as one of the most effective air purifiers. It is only mildly toxic in tiny amounts. It causes mouth burning, skin irritation, swelling of the lips, tongue, and throat, vomiting, and diarrhoea in people. Drooling, choking, swelling of the mouth and tongue, trouble breathing, stomach distress, renal failure, and even death can occur in cats and dogs.

English Ivy

English Ivy is another poisonous house plant that causes irritation of the skin, a burning throat, a fever, and a rash.

Also Read: Low Maintenance Houseplants


Oleander is a popular and deadly indoor flowering shrub. Use caution during pruning, such as wearing gloves and washing your hands.

Sago Palm

Sago Palm is one of the oldest living plants on the planet. All parts of the plant, including the seeds and roots, are poisonous. When ingested, it causes vomiting, diarrhoea, and death.

ZZ Plant

ZZ Plant

This plant is toxic in every way. Wear gloves and wash your hands after touching this plant. Because this plant is extremely dangerous, proper measures must be followed when handling it.

Peace Lily

Several varieties of peace lilies are available, with the “Mauna Loa” lily being the most popular indoor decoration. They are excellent air cleansers, but if consumed by humans or animals, they can cause agonising symptoms and even death. They cause vomiting, nausea, and diarrhoea in humans by burning and enlarging the lips, mouth, and tongue, making it difficult to speak or swallow. In animals, it can cause burning mouths, diarrhoea, vomiting, dehydration, appetite loss, and excessive salivation. If left untreated, it might lead to renal failure.

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Despite the fact that these plants are not good inside the house, they create the most attractive entrance in a corridor or as a display. So, if you send someone a houseplant, make sure to include explicit instructions so that they can appreciate its beauty from a safe place. Also, if you’re looking for a house plant gift delivery, check out SnapBlooms. When you order a plant, you will also receive all of the plant’s instructions so that your loved one stays safe while also enjoying its beauty.


Is the peace lily plant poisonous to humans?

When consumed, peace lily is only mildly poisonous to humans and other animals.

What should you remember to avoid poisonous plants?

Remember to wash your hands after spraying pesticides on your plants and to keep your children and pets safe.

Are caladiums poisonous to cats?

Yes. Chewing on Caladium produces acute irritation and swelling of the mouth, tongue, and throat in both dogs and cats, as calcium crystals induce soft tissue injury.



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