Rhododendron ( Marion Merriman Knap Hill Azalea )
Upright , deciduous shrub with ruffled , clear yellow peak and intense orangish markings . Knap Hill / Exbury Hybrids are both English bred cross . They are upright , 4 to 10 feet tall and 4 to 6 feet broad . corbel of up to 30 trumpet - shaped flowers , each to 3 inches wide , are birth in mid to late spring . The deciduous cross azalea , like it ’s native counterpart , is have a go at it for excellent declivity color and unexceeded spring flowers ....