Rhododendron hybrida ( Pinkie Glenn Dale Azalea )
widely , spreading , evergreen azalea developed principally for cold hardiness along the mid - Atlantic states . undivided , funnel shape - regulate , bright violet - pinkish flowers with red splotch , 2 1/2 inches wide . bloom are borne in showy corbel of 1 to 4 per cluster . Bloom time is previous April in warmer areas and as lately as early June in cooler climates . Plant as you would any of the other azalea : high and in well - enfeeble , acrid territory , plenteous with organic matter ....