Rhododendron prunifolium (Plumleaf Azalea) grows to 15 ft. Needs partial shade. Orange-red flowers bloom July-August. Adding this species to your native Rhododendron collection will certainly extend the flowering time of your garden.
Hardiness (Zone 5-9)
Wanted late blooming native azalea and had difficulty finding. Believe that it is planted in ideal place -- sun in AM, shade in PM. Eager to see it bloom.