Encore azaleas come in shades of pink, purple, red, white and bi-color. Among the pink varieties is the Autumn Carnation, which is a cultivar of Rhododendron "Roblec."
The Autumn Carnation azalea grows about 4.5 feet tall and has a spread of 4 feet. It has semi-double blooms and does best in USDA hardiness zones 6a, 6b, 7, 8 and 9.
A white azalea is Autumn Moonlight. It produces semi-double blossoms that are about 2.5 inches across. It grows to a height of 5 feet and has a spread of 4 feet. It does best in hardiness zones 7, 8 and 9.
The Autumn Starlight azalea has a white, single blossom speckled with pink. It is a dwarf variety and also thrives in zones 7, 8 and 9.