Clerodendrum bungei is a deciduous shrub that grows up to 2 m in height. Its leaves are cordate (heart-shaped), 10–20 cm long and not quite as wide, and have coarsely toothed edges. The flowers, which appear in late summer, are coloured rose, crimson, or pink, and arranged in a conspicuous rounded terminal inflorescence known as corymb, which is up to 10 cm in diameter. As in other Clerodendrum species, the calyx is five-lobed. At the centre of each flower there is a slender tube c. 3–4 cm long which terminates in five spreading white lobes. While the flowers are fragrant, crushed leaves have an unpleasant odour.