Top 10 Most Poisonous Plants

Manchineel: Ingestion of the deceptively sweet, crabapple-like fruits of the Manchineel tree is known to blister the mouth and cause.

Jimsonweed: The thorny seed capsule of the jimsonweed (Datura stramonium) practically shouts a warning to stay away.

Aconite: Every part of the aconite plant is laced with the toxin aconitine, making it dangerous to consume or even touch.

White Snakeroot: White snakeroot (Ageratina altissima) contains high levels of tremetol, a powerful toxin.

English Yew: The toxic English yew tree has come to represent both death and the immortality of the soul.

The Castor Bean: Castor beans, also known by the scientific name Ricinus communis, are the main ingredient in making the poison ricin.

Deadly Nightshade: As few as two ingested berries of the deadly nightshade (Atropa belladonna) plant can kill a child.

The Rosary Pea: The rosary pea (Abrus precatorius) has seeds with bold red and black warning colors, indicating their extreme toxicity.

Water Hemlock: The water hemlock's white roots are sometimes mistaken for a parsnip plant — a potentially fatal error.

Oleander: All parts of the beautiful oleander (Nerium oleander) contain poison.

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