Hybrid origin
Northeastern United States, Mid-Atlantic United States, Southeastern United States, Central United States, Texas, Canada
Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae
Blue Moon, Clouds of Perfume
21,22
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17