Genus Azalea Species hybrida Cultivar 'RLH1-2P8' Bloom-A-Thon Pink Double Common Name Bloom-A-ThonÂ® Pink Double Azalea Patent ID pp# 21477 Height 3 to 5 Feet Spread 3 to 5 Feet Habit Mounded to rounded habit. Slow to moderate growth rate. Zone 6 to 9 Culture Full sun to partial shade. Flower Double, bright pink flowers in April-May then again in summer and again in fall. Flower Color Pink Foliage Dark green, evergreen. Categories: Azalea Evergreen Shrub Description Look for continuous cycles of blooms through the heat of the summer and heavy flowering in fall. Photo courtesy of Proven Winners.