Clethra — 5 species
Botanical species in the genus Clethra recorded in the PlantPeers database.
Clethra acuminata
Clethra acuminata
Family: Clethraceae
Cultivation
Clethra acuminata is a moderately cold-hardy plant, when dormant it can tolerate temperatures down to about -20°c. Prefers growing in an open woodland with its roots in the shade. It requires a humus-rich, lime-free, moist but well-drained soil.
Full cultivation guide →Clethra alnifolia
Clethra alnifolia
Family: Clethraceae
Cultivation
Clethra alnifolia is a very cold-tolerant plant, when dormant it is hardy to about -30°c. Prefers a moist but well-drained lime-free sandy and peaty soil, though it is adaptive to a wide range of soil, moisture and light conditions. It loves abundant moisture at its roots.
Full cultivation guide →Clethra barbinervis
Clethra barbinervis
Family: Clethraceae
Cultivation
Clethra barbinervis is a moderately cold-hardy plant, tolerating occasional temperatures down to about -20°c according to some reports, though some other reports say that it can fail if winter temperatures are consistently around its lower limits of tolerance. The new growth in spring is very susceptible to damage by late frosts. Requires a moist well-drained lime-free peaty soil succeeding in a sunny position or partial shade.
Full cultivation guide →Clethra delavayi
Clethra delavayi
Family: Clethraceae
Cultivation
Clethra delavayi is is not very cold-hardy, and can be damaged if temperatures fall below -10°c. Prefers growing in an open woodland with its roots in the shade. It requires a humus-rich, lime-free, moist but well-drained soil.
Full cultivation guide →
Clethra scabra
Clethra scabra
Family: Clethraceae
Cultivation
Grows best in a sunny position. Plants are often found in the wild on poor-quality, compacted, moist soils. Established plants are drought tolerant.
Full cultivation guide →