Top 10 Most Dangerous Plants You Should Stay Away From


Just like most of the living beings on this earth, even plants have their own defense mechanisms and can

be deadly or dangerous just like most of the wild animals or reptiles. There may be many plants that may look pretty and colorful but you never know the dangers or toxins that they may carry and cause harm to your health. At times, it’s hard to realize as some of the plants in your backyard or neighborhood could pose serious health hazards. That’s why it’s perhaps a good idea to hire experts that can maintain your garden that have the knowledge in what to do if they come across a potentially dangerous plant, depending on where you live you might want to see the other service areas at Trugreen Texas.

Watch out for some of the most dangerous plants that may cause potential danger to humans:


10. Water Hemlock

Water Hemlock Most Dangerous Plants

Water Hemlock is primarily found in the regions of North America and grows usually in the swamps, ponds, nearby lakes, and marshes. They can grow up to 8 ft and have small white or green flowers that form an umbrella. These deadly plants contain high concentrations of chemicals named cicutoxin and if they are ingested can lead to symptoms such as dizziness, vomiting, seizures and, sometimes may even result in death. 

9. Nightshade


Nightshade is a native plant found in parts of North Africa, Asia, Western Asia and some places around Canada and the US. Nightshade also known as Belladonna belongs to the family of Solanaceae and these contain Tropane alkaloids which are highly toxic. They are among the most dangerous plants as every part of this plant right from the roots, berries to the leaves can be harmful to humans. 

8. Oleander


Oleander is one of the most versatile shrubs and they are grown almost everywhere especially in the gardens. These plants bloom from spring until the summer and form large clusters of flowers in different colors ranging from yellow, pink, red, white at the tip of the stems.

Every part of this plant is poisonous and the smoke resulting from Oleander debris is highly toxic and ingesting even small amounts of shrubs, flowers or foliage can be potentially hazardous to your health. You can get skin irritations and allergic reactions by having contact with the flowers or shrubs of Oleander. Some of the more severe reactions can be tremors, seizures, coma or even death. 

7. White Snakeroot

White Snakeroot

White Snakeroot is a native to North America and is commonly found in Ohio but usually a bit rare in the North Western parts of the US. This is typically a 3-foot herb that has white clusters of flowers which can look attractive, but can be highly toxic in nature. The leaves and stems of this plant contain tremetol that can be lethal and poisonous too.

This can cause great danger to the animals that consume this plant and can lead to sickness or can lead to a serious condition called “trembles” that can result in the death of the livestock. These lactating animals can pass on this toxic to humans through their milk and cause death. 

6. Manchineel Tree

Manchineel Tree

Manchineel tree can be found along the parts of Central and South America, the Bahamas and the Southern North America. The fruit from this tree is quite similar to that of an apple in its appearance and has been named as the “little apple of death”. The leaves, sap, fruit and all parts of this tree are highly poisonous by nature.

Manchineel Tree is one the most dangerous plants and the smoke resulting from burning of these trees if it reaches your eyes can lead to blindness. 

5. Angel’s Trumpet

Angel’s Trumpet

Angel’s Trumpet has flowers that are quite attractive and fragrant and it is actually a shrub and not a tree. This is native to South America and the shrub can grow as tall as 20 feet and it comes in various colors of white, peach, yellow and orange. Angel’s Trumpet is a member of the Nightshade family but all parts of this shrub can be highly toxic to the humans. 

4. Castor Bean

Castor Bean

Castor Bean is a tropical plant that can be found across India and Africa but it is commercially grown in parts of the US. This shrub-like plant is known for its striking appearance and is moderate in size but can grow to the size of a small tree. There are some beneficial properties of the castor bean but the raw fruit is mainly toxic which contains ricin.

Exposure to this highly toxic substance can lead to nausea, seizures and they can affect the livestock animals as well. 

3. Rosary Pea

Rosary Pea

Rosary Pea is native to India and is known by many different names such as Indian Licorice or crab eye. The seed of this plant is used in many musical instruments in the form of percussion but it can be toxic to the humans. It comprises of a toxic substance abrin, which has similar effects to that of Ricin but in a more concentrated form. This can cause liver failure and eventually result in death if it is ingested by humans. 

2. Aconite


Aconitum is also known by different names such as Aconite, wolf’s bane, devil’s helmet. Queen of all Poisons and they are native to mountainous regions of the Northern hemisphere. This plant is highly poisonous and the most dangerous among plant species known to humans.

According to history, Cleopatra could have used this lethal plant Aconite to kill her brother. Its poison reacts very quickly on the body and a large dose can paralyze the heart muscles. Even plucking leaves of this plant can be extremely dangerous and could kill a person. 

1. The Suicide Tree

The Suicide Tree

Cerbera Odollam is a leafy green plant which is native to Indian and the South Asian regions which grows in the coastal marshes but often used as a hedge plant. It contains cerberin which is extremely toxic and if consumed can disrupt the calcium ion channels that can lead to irregular pulse movements.

There is a potential threat of this plant as they can be mixed with foods and flavored with spices that can lead to death. The worst part is it cannot be detected through autopsies and can be misused for committing suicides.

Leave a Reply

Be the First to Comment!

Notify of