Rhododendron carolinianum -- 3-5 ft, open, rounded. Prefers partial shade, acidic, moist, well-drained soil. Intolerant of wet, high-pH soils, salinity, win- ter wind, and winter sun. Large, umbel-like ow- ers range from white to pale rose to rosy purple in mid-May. Large leaves are dark green during the summer and turn green to purple green in the winter. Two varieties: ‘Album’ (white owers) and ‘Luteum’ (yellow owers). Will survive zone 5 with winter protection.