Oleander (Nerium oleander) | The Deadliest Plants in the World

Oleander (Nerium oleander)

One of the most poisonous of garden plants in the world, oleander can send you into cardiac arrest within minutes of ingesting it. All of the plants parts are toxic; the leaves, flowers and fruit contain cardiac glycosides, which have therapeutic applications but are toxic if eaten in the wrong measure. Surprisingly for such a poisonous plant, there have only been 3 deaths in the Unites States in the 20-year period from 1985-2005.

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