20 of the World's Deadliest Plants
Elder
Where it occurs: Temperate zone of the Northern Hemisphere and Australia. The most common members of this genus are red elder and black elder. All parts of the plant are toxic. If you as much as touch an elder, you’d better wash your hands. Ripe black elderberries, however, are completely safe and are used to make beverages and pies. Why it is dangerous: Causes headache, weakness, abdominal pains, and, occasionally, seizures. Cardiac or respiratory failure are also possible.
