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Clethra alnifolia ''Hummingbird''

Photo by Michael A. Dirr

Clethra 'Hummingbird'

Clethra alnifolia and the southern Clethra tomentosa are stoloniferous deciduous shrubs commonly called Summersweet or Sweet Pepperbush. They form colonies in moist acid soil and make good garden subjects. They are valued for their terminal spikes of fragrant white flowers in summer. Plant in sun or semi-shade and provide adequate moisture. This compact and floriferous selection spreads vigorously by rhizomes and forms large colonies. Flowers open earlier than typical for the species. A selection made by the late Fred Galle of Callaway Gardens, Georgia. Dirr says it is "one of the finest, compact deciduous shrubs available to gardeners." Clethra alnifolia is native to eastern U.S.

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30-40 Inches


6-8 Feet


USDA Hardiness Zone 6-9

Characteristics & Attributes

Growth Rate in the Garden
Slow to Moderate
Soil Properties
Sun Requirements
Full Sun to Part Shade