Prevent winter burn by avoiding exposed planting sites and by shading during winter. Some major types of rhododendron and azalea are listed below. Rhododencron Exbury Hybrids Also called Knap Hill hybrids. These are deciduous shrubs that produce clusters of 2 to 3 inch flowers of various colors. Rhododendron catawbiense - Catawba Rhododendron Evergreen shrubs reaching a height and spread of 6 feet.
Various cultivars produce flowers of white, pink, red, or purple.
Rhododendron P.J.M. A smallish shrubs with a height and spread of 4 feet. It produces a dependable and profuse display of lavendar flowers in very early spring. The dark green foliage turns plum-purple in fall. Rhododendron x kosteranum - Mollis Azalea Deciduous shrubs reaching a height and spread of 4 feet. These fairly open plants produce flowers of orange, yellow, pink, or white depending on cultivar.