Location: The rhododendron is found just about everywhere. Rhododendron plants are evergreen shrubs often forming dense growths in Canada and in the United States. They are found in the Appalachians and West Coast. It is the state flower of two US states, West Virginia and Washington, and is quite common in Great Britain as well.

Effects and Symptoms: The victim can experience nausea, irritation, drooling, vomiting, increased tear formation, paralysis, slowing of pulse, lowering of blood pressure, diarrhea, seizure, coma, and death.

Case Studies: Children have been poisoned by sucking nectar from the blossoms or by drinking making tea made from the leaves of the rhododendron plant. The Greeks found that honey from bees that have fed on azaleas, rhododendrons, oleander, or dwarf laurel is also poisonous.