Rosebay

Rhododendron aureum

Physical Characteristics

Rhododendron aureum is an evergreen Shrub growing to 0.5 m (1ft 8in) by 1 m (3ft 3in). See above for USDA hardiness. It is hardy to UK zone 2. It is in leaf all year, in flower in May, and the seeds ripen from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid soils and can grow in very acid soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

E. Asia - China, Japan, Korea.

Habitats

Woodland Garden Dappled Shade; Shady Edge;

Edible Uses

None known

Medicinal Uses

Antirheumatic Diaphoretic Haemostatic Homeopathy VD The flowers are used in Tibetan medicine, they are said to have a bitter taste and a neutral potency[241]. Caution should be exercised when using the flowers because they are toxic[241]. Haemostatic, they are used in the treatment of spreading pus and blood in the thoracic region, especially the lungs[241].

Known Hazards

Although no specific mention of toxicity has been seen for this species, it belongs to a genus where many members have poisonous leaves. The pollen of many if not all species of rhododendrons is also probably toxic, being said to cause intoxication when eaten in large quantities[183].