Genus of about 1000 species of higly ornamental evergreen and deciduous shrubs. The genus name is derived from the Greek words for rose 'rhodon" and tree "dendron". It includes the plants of the Azalea genus. Azaleas feature smaller, evergreen or deciduous leaves whereas rhododendrons bear larger, leathery and always evergreen leaves. Grown for their abundant flowers borne in April and may.
Latin name: Rhododendron "Trewithen Blue"
They grow in partial shade or even better in deep shade, in acid, humus-rich, well-drained soils. Hence, plant them underneath clusters of conifers (especially pines). Prune lightly after flowering, removing overmature inflorescences.
Plant alone or in groups or use for hedges.
Propagated by semi-woody cuttings in late spring and summer.
Plants grown from seeds take many years to bloom.
Rhododendron with purple flowers.