Sometimes called deciduous Azaleas these plants are more in the yellow/orange/red color range while the evergreen Rhododendrons are in the pink/purple range. Deciduous Rhododendrons are usually fragrant but the evergreen Rhododendrons are usually not fragrant. The bloom time is April and May.
Here are a few deciduous Rhododendrons at Dawn Gardens:
Rhododendron ‘Umpqua Queen’
Rhododendron ‘White Lights’
Rhododendron ‘Mt. St. Helens’
Rhododendron ‘Irene Koster’
Much of the hybridization of deciduous Rhododendrons has been done at Exbury Gardens in England. Those hybrids are collectively called “Exbury Azaleas”.