Prized for their beauty, daffodils grow from bulbs that could be mistaken for an edible food, like an onion. Daffodils — also known by their Latin name Narcissus — are common ornamental plants with a bright, cheery and mostly toxin-free flower. Most daffodils are deer- and vermin-resistant, but gardeners shouldn't overlook the dark side of this plant. The Greek philosopher Socrates sometimes referred to daffodils as the "Chaplet of the infernal Gods" because ...

Prized for their beauty, daffodils grow from bulbs that could be mistaken for an edible food, like an onion. Daffodils — also known by their Latin name Narcissus — are common ornamental plants with a bright, cheery and mostly toxin-free flower. Most daffodils are deer- and vermin-resistant, but gardeners shouldn't overlook the dark side of this plant. The Greek philosopher Socrates sometimes referred to daffodils as the "Chaplet of the infernal Gods" because ...

White snakeroot contains the toxin tremetol, which can be poisonous if consumed directly or second-hand. When snakeroot is consumed by cattle, the animals' beef and milk become contaminated with the toxin, and ingesting those substances can lead to a condition called milk sickness. Abraham Lincoln's mother, Nancy Hanks, reportedly died after swallowing snakeroot-contaminated milk. Human disease is uncommon today because of current practices of animal husbandry and the pooling of milk from…

16 plants that could kill you

White snakeroot contains the toxin tremetol, which can be poisonous if consumed directly or second-hand. When snakeroot is consumed by cattle, the animals' beef and milk become contaminated with the toxin, and ingesting those substances can lead to a condition called milk sickness. Abraham Lincoln's mother, Nancy Hanks, reportedly died after swallowing snakeroot-contaminated milk. Human disease is uncommon today because of current practices of animal husbandry and the pooling of milk from…

This plant may sound pious, but it's actually deadly. Rosary peas got their name from their traditional use as ornamental beads for rosaries. They are used in jewelry around the world. Many jewelry makers have died after pricking a finger while handling a rosary pea. The poison contained within the seed is abrin — a close relative of ricin and one of the most fatal toxins on Earth.

16 plants that could kill you

This plant may sound pious, but it's actually deadly. Rosary peas got their name from their traditional use as ornamental beads for rosaries. They are used in jewelry around the world. Many jewelry makers have died after pricking a finger while handling a rosary pea. The poison contained within the seed is abrin — a close relative of ricin and one of the most fatal toxins on Earth.

Relatively common in Europe, northwest Africa and the Middle East, nearly all parts of this slow-growing tree can be poisonous. The exception is the red fleshy aril that surrounds the toxic seeds. The aril is frequently eaten by birds. Some people have chosen to commit suicide by ingesting the leaves or the seeds, both of which contain a poison called taxanes.

16 plants that could kill you

Relatively common in Europe, northwest Africa and the Middle East, nearly all parts of this slow-growing tree can be poisonous. The exception is the red fleshy aril that surrounds the toxic seeds. The aril is frequently eaten by birds. Some people have chosen to commit suicide by ingesting the leaves or the seeds, both of which contain a poison called taxanes.

The name says it all — both the foliage and the berries of this plant are extremely toxic. Deadly nightshade has a long, colorful history of use as a poison, but what many people don't realize is that the nightshade family includes common food plants, including potatoes, tomatoes, eggplants and chili peppers. In fact, all of these plants contain toxins — usually in their foliage — that can be harmful. In particular, humans and pets should avoid potato and tomato foliage and ...

16 plants that could kill you

The name says it all — both the foliage and the berries of this plant are extremely toxic. Deadly nightshade has a long, colorful history of use as a poison, but what many people don't realize is that the nightshade family includes common food plants, including potatoes, tomatoes, eggplants and chili peppers. In fact, all of these plants contain toxins — usually in their foliage — that can be harmful. In particular, humans and pets should avoid potato and tomato foliage and ...

Oleander is one of the most toxic, commonly grown garden plants in the world — and oddly enough, it's often found in schoolyards. Ingesting any part of this plant can be deadly, especially for children. Even smoke from burning oleander can be fatal. In fact, according to the Toxic Exposure Surveillance System (TESS), there were 847 known human poisonings in the United States related to oleander in 2002.

16 plants that could kill you

Oleander is one of the most toxic, commonly grown garden plants in the world — and oddly enough, it's often found in schoolyards. Ingesting any part of this plant can be deadly, especially for children. Even smoke from burning oleander can be fatal. In fact, according to the Toxic Exposure Surveillance System (TESS), there were 847 known human poisonings in the United States related to oleander in 2002.

An apple a day might keep the doctor away, but the same can't be said for apple seeds. The seeds contain cyanogenic glycosides, and if you consume enough of the seeds, you could ingest a fatal dose. If you cut up apples for your children or prefer to eat whole apples down to the core, make sure you remove those seeds. (Johnny Appleseed never seemed so villainous!)

16 plants that could kill you

An apple a day might keep the doctor away, but the same can't be said for apple seeds. The seeds contain cyanogenic glycosides, and if you consume enough of the seeds, you could ingest a fatal dose. If you cut up apples for your children or prefer to eat whole apples down to the core, make sure you remove those seeds. (Johnny Appleseed never seemed so villainous!)

Monkshood has a long tradition as a deadly plant and was used by ancient warriors to poison the water of their enemies. It was once used as a popular werewolf-detection tool. The flower was held near the alleged wolf’s chin, and if a yellow-tinged shadow appeared, that was confirmation that the person was a werewolf.

16 plants that could kill you

Monkshood has a long tradition as a deadly plant and was used by ancient warriors to poison the water of their enemies. It was once used as a popular werewolf-detection tool. The flower was held near the alleged wolf’s chin, and if a yellow-tinged shadow appeared, that was confirmation that the person was a werewolf.

Identify your Zone of Hardiness, and purchase only plants recommended as reliably hardy there.

Vegetable Growing Guide

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