Genus Azalea Species hybrida Cultivar Bloom-A-Thon® White Patent 21512 Common Name Bloom-A-Thon® White Azalea Zone 6 to 9 Habit Compact, mounding habit. Slow to moderate growth rate. Height 2.5 to 3 Feet Spread 2.5 to 3 Feet Foliage evergreen., Medium green foliage Flower and again in fall., then again in summer, White flowers in April Flower Color White Culture Full sun to partial shade. Categories: Azalea Evergreen Shrub Proven Winners® Color Choice® Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window) Description Photo courtesy of Proven Winners.