Rhododendron kaempferi ( Kathleen Torch Azalea )
Rhododendron kaempferi , or Aaron’s rod azalea , is a cold - hardy , semi - evergreen bush , usually tall and panoptic . The Kaempferi cross were cover from R. kaempferi as well as R. ‘ Malvatica ’ and R. “ Maxwelli . ’ Leaves are glossy , lance - shaped to ovate , 1 1/2 to 2 inches long . Flowers are expect in showy trusses of 2 to 4 per clustering ....