Rhododendron Wren Plant in 9cm Pot, Magnificent Pale Yellow Flowers 'Wren' is a dwarf evergreen shrub growing to 40cm high and 1m wide. The glossy, dark green leaves may turn bronze in winter whilst the young leaves have a reddish colour. Pale yellow, funnel-shaped flowers are borne in mid spring. Growing Details Common Name: 'Wren' Skill Level: Beginner Exposure: Full sun Hardiness: Hardy Soil type: Well-drained/light, Acidic, Moist Height: 0.5m Spread: 0.5-1m Description Rhododendron can be evergreen or deciduous shrubs or trees, with simple leaves, sometimes with a dense colourful indumentum of hairs on the lower side, and funnel-shaped, bell-shaped or tubular flowers that may be solitary or in short racemes