Clethra acuminata (Cinnamon clethra)

Clethra acuminata Photo/Illustration: William Cullina



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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Clethra acuminata KLETH-rah ah-kew-min-AY-tah Common Name: Cinnamon clethra Genus: Clethra
Larger in all respects than common sweet pepperbush (Clethra alnifolia), this sizable shrub or small understory tree grows 8 to 12 feet tall and wide. In early summer, long, slender racemes composed of small ivory flowers appear, then give way to peppercorn-shaped seed capsules that swoop out from the branch tips in fall. About the same time, lance-shaped leaves become a glowing golden yellow before falling to reveal the reddish brown bark. The bark peels in small, irregular patches in the fashion of sycamores (Plantus occidentalis) to expose a dusty gray under-bark. Cinnamon clethra is a good choice for a woodland garden, where the tiered branches and elegant stems look captivating against new fallen snow.
Noteworthy characteristics: Native to rich mountain woods and streamsides in the southern Appalachians from Pennsylvania to Georgia.
Care: Provide full sun to light shade and moist soil. It benefits from more shade farther south.
Propagation: Root cuttings in early summer, or start seeds in containers outdoors in spring or fall.
Problems: Generally trouble-free, but fungal dieback and root rot sometimes affect plants.
Height 6 ft. to 10 ft.
Spread 6 ft. to 10 ft.
Light Full Sun to Part Shade
Moisture Medium Moisture
Maintenance Low
Characteristics Attracts Butterflies; Fragrant Flowers; Interesting Bark; Native; Showy Fall Foliage; Showy Flowers
Bloom Time Early Summer
Flower Color White Flower
Uses Beds and Borders, Waterside
Style Woodland Garden
Seasonal Interest Summer Interest, Fall Interest
Type Shrubs

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