Rhododendron hybrida ( Dandy Glenn Dale Azalea )
Upright to widely diffuse , evergreen azalea developed chiefly for insensate hardiness along the mid - Atlantic states . undivided , funnel shape - shaped , shiny purple - cherry efflorescence with orange throats , 2 1/2 inches wide . Flowers are deport in showy truss of 2 to 4 per bunch . Bloom time is late April in warm areas and as late as early June in cooler clime ....