Rhododendron maddenii (éÂÂèÂÂæÂÂé¹Â) is a rhododendron species native to Bhutan, northern India, northeast Myanmar, Sikkim, Thailand, northern Vietnam, and southwestern China, where it grows at altitudes of . It is an evergreen shrub or small tree growing to in height, with leathery leaves that are lanceolate, oblong-oblanceolate, or elliptic, 5âÂÂ15 by 2âÂÂ8 cm in size. The flowers are predominantly white, very fragrant, and unusually produced during May and June. However, it dislikes freezing temperatures (RHS H3), and is more likely to thrive in warm or coastal temperate climates such as Cornwall, UK.