Clethra are deciduous and evergreen shrubs and small trees grown for their fragrant white to yellow-white, cup-like flowers. Leaves are mid- to dark green, alternate, simple, and finely to coarsely toothed. Clethra are suitable for a woodland garden or mixed border.
Noteworthy CharacteristicsFragrant flowers.
CareUnder glass, grow in acidic soil under bright filtered light. Outdoors, grow in slightly acidic soil in part shade.
PropagationSow seed at 43° to 54°F in spring or autumn. Root greenwood cuttings in early summer.
ProblemsFungal dieback and root rot can occur.