Cultivar
'Irene Koster'
This deciduous azalea is similar to the species growing to 1.8 m (6 ft) tall and by 2.4 m (8 ft) wide and produces white flowers with pink margins and have a large yellowish green blotch on the upper petal. 

The smaller flowers are highly fragrant and appear from late spring to early summer. It prefers that the open sunny to partially shaded position and grows in most well-drained fertile moist soils that are tending acidic, in USDA zones 7-9.