Rhododendron is a genus of flowering plants in the family Ericaceae. It is a large genus with over 1000 species, of semi-deciduous and deciduous shrubs and trees , and most have showy flower displays. It includes the plants known to gardeners as azaleas. They are grown mainly for their mass display of flowers, which will vary greatly in size from tiny blooms to large trumpets. They usually have clusters of blooms from the branch tips, and appear in every colour except bright blue. They are mainly broad leaved with roughly elliptical, usually deep green leaves. They are fully hardy to frost tender, min 4-7C and will prefer dappled shade, but a considerable number will tolerate full sun, especially in cool climates. Grow them in neutral to acidic soil which is humus-rich and well drained.
‘Ken Janeck' is an an excellent rhododendron for the small garden. It has a compact habit, reaching 3 feet high and a bit wider in 10 years. It is sun tolerant.
The many ‘yak' rhododendron hybrids (named for the Rh. degronianum subsp. yakushimanum parent) are popular due to the fuzzy coating beneath their leaves (called indumentum). This selection also has richly colored pink flowers that appear in early May. Its leaves are long, narrow and roll slightly. It is compact, sun tolerant and has won numerous awards.
Microclimate
Sun
Shelter
Aspect
Hardiness
hardy
Drainage
Moist conditions with high humidity.
Soil Type
Clay, Loam, Sand
Needs humus-rich (moderate fertility) clay and well drained. Hardy hybrids prefer water-logged soils