Rhododendron ( Cannon’s Double Exbury Azalea )
The Knap Hill and Exbury azalea are English hybrid resulting from crossbreeding between R. molle , R. calendulaceum , R. arborescens , and R. occidentale . Upright , fearless , deciduous bush with elliptic to oblong , 2 to 6 inch farsighted leaves . Flowers are hold in vast , showy truss of 18 to 30 bloom of youth per cluster . flush time is from mid to tardy spring ....