The name Rhododendron comes from the greek words "rodon" which means "rose" and "dendron" which means "tree", hence Rose Tree. Rhododendron flowers are usually produced in trusses. The family Ericacea, into which the genus Rhododendron falls, also includes heathers, mountain laurels, blueberries and cranberries as well as manzanita, trailing arbutus, madrone, huckleberry, kalmiopsis, sourwood, blueberries and a number of other genus. Rhododendrons are referred to as the King of Shrubs since they are regarded by many as the best flowering evergreen plants for the temperate landscape.