Rhododendron (Deciduous Azalea) Atlanticum. Costal dwarf rhododendron is deciduous. Small white flowers tinged pink emerge shortly before the leaves. The leaves are blue green and soft compared to other rhododendron varieties. Flowers produce a sweet musky fragrance. The rhododendron is known to spread from suckers under ground so you can end up with an impressive sized display. Full sun to part shade. 90cm by 150cm.