Rhododendron prunifolium

The wide tubular-shaped (non-fragrant) flowers of the Plum Leaf Azalea are apricot to orange-red.  This is one of the latest native azaleas to bloom (late July to August).  Plant where it can receive afternoon shade to prolong the flowers during the hot summer months.  It is a large grower (to 15 feet).  Zone:  7a-9b