Poison Hemlock, specifically conium malacutum, might just be one of the most infamous poisonous plants in the world. This beautiful yet deadly flower was actually the method of suicide chosen by Socrates. While it may be pretty to look like, Poison Hemlock has some pretty horrible effects, including serious damage to the Central Nervous System and respiratory arrest.
Rhododendrons are grown throughout the U.S. as an ornamental plant, and while they are quite easy to grow and pleasing to the eye, they're pretty dang toxic. Eating this plant basically suggests that you have a death wish. The effects include watery eyes, violent vomiting, and sudden drops in blood pressure.
Once again, this is a beautiful little shrub that is commonly used decoratively. Oleander also happens to be one of the most regularly cited deadly plants in the world. Swallowing even small portions of the flower can cause cardiac arrest.
If you have ever dabbled in the world of illicit drugs, you might have heard about articles warning people about the dangers of Angel's Trumpet tea. This tea is made from the Angel's Trumpet plant, which is also known as datura. Though it has been known to give people a feeling of euphoria and can also give people hallucinations, it's not a fun one. A large percentage of people who eat this plant or drink its tea end up having seizures, heart attacks or just slip into a coma. Death is also a scarily regular occurrence, even with low dosages.
Water Hemlock, which is related to regular Poison Hemlock, has been repeatedly cited as the most toxic plant in North America. This pretty plant also goes by the name of cowbane, primarily because it has enough poison in it to kill a very large cow. If you make the mistake of eating Water Hemlock, you can expect vomiting, convulsions, seizures, and a pretty horrifying death soon after.
Deadly Nightshade, also known as Atropa Belladonna, has been regularly cited in history and pop culture as a poisonous flower. Legends say that Macbeth poisoned the Danes with wine made from it. This flower has a double whammy of deadliness. Atropine, which is its main poison, causes full-body paralysis, which in turns stops heart and respiratory functioning. Scopalamine, which is also found in Columbian Devil's Breath, is an extremely toxic sedative drug which is often used by drug cartels to brainwash and enslave victims. Nightshade is so toxic, even lightly brushing the plant will cause serious irritation.
This hemlock lookalike is dangerous and deadly in its own right. White Snakeroot contains a toxic chemical called trematol, and scarily enough, you might not even realize you've been poisoned by it until it's way too late. Cows happen to enjoy grazing on White Snakeroot, and with cows, the poison doesn't get digested. Instead, it gets passed through milk. Abraham Lincoln's mother apparently died because she drank milk from a cow that grazed on White Snakeroot. Symptoms include loss of appetite, blood acidity, reddened tongue and death.
Doll's Eyes has a name that is creepy enough, but what's really terrifying about this ominous-looking plant is how poisonous it is. The berries of this plant have an exceptionally toxic compound that causes almost immediate cardiac arrest. It usually will take eating several berries in order to kill a person, but since they have a sweet taste, it still does happen. In smaller doses, these berries will still kill you ”” only they'll do it by causing cancer.
This seemingly innocuous Southeast Asian tree has a pretty mellow sounding name, but it's also known by another, less cutesy title. Quaker's Button is also known as the Strychnine Tree. Strychnine, which has been used to kill rats in the US, also happens to cause serious nerve damage to people. Those who make the mistake of eating any part of this tree die due to extremely violent convulsions within a matter of minutes.
The Australian Stinging Tree is considered to be the most painfully poisonous plant in the world. Just brushing against this plant will make your skin feel like it's on fire. Worse, it's a pain that lasts for months. It's so painful, so absolutely brutal, that people have committed suicide just to get rid of the pain that they feel.
These unassuming beans contain one of the most deadly toxins in the world: ricin. That being said, Castor plants are also grown because they are what castor oil is made of. Other gardeners also have been known to grow them for ornamental purposes.
This beautiful-looking flowering tree is also known as the Suicide Tree. Every single part of this plant is extremely poisonous, and because its seeds tend to look like herbs, it's often used as a method of murder. Its poison is a strong paralytic that almost instantaneously paralyzes the heart.
The video basically says it all. This plant is beautiful, is nicknamed "The Queen of All Poisons," and can kill you in minutes if ingested.