Rhododendron luteum, the yellow azalea or honeysuckle azalea, is a species of Rhododendron native to southeastern Europe and southwest Asia. In Europe, it occurs from southern Poland and Austria south through the Balkans and east to southern Russia, and in Asia, east to the Caucasus. It is a shrub growing to 3 m tall, rarely 4 m. The leaves are deciduous, 5-10 cm long and 2-4 cm broad. The flowers are 3-4 cm diameter, bright yellow, and strongly perfumed, produced in trusses of 5-25 together. The fruit is a dry capsule 15-25 mm long, containing numerous small seeds.