Genus Azalea Species hybrida Cultivar 'Gumpo White' Common Name 'Gumpo White' Azalea Patent ID Height 2 to 3 Feet Spread 4 to 5 Feet Habit Low, mounding shrub. Slow to moderate growth rate. Zone 7 to 9 Culture Full sun to partial shade. Flower White with ruffled petals, occasionally with pink splotches. May-June. Flower Color White Foliage Dark green, glossy. Evergreen. Categories: Azalea Evergreen Shrub Description A Satsuki Hybrid.