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Summersweet
Clethra alnifolia
Summersweet, also called Sweet Pepperbush, is a deciduous shrub native to the eastern U.S., often found in moist woodlands, stream banks, and coastal areas. It thrives in full sun to partial shade and prefers consistently moist, acidic soils—but it can also handle occasional dry spells once established.
Typically growing 3–8 feet tall, Summersweet forms a dense, upright shape with glossy, dark green leaves that turn brilliant golden-yellow in fall. From mid to late summer, it produces upright, bottlebrush-like clusters of highly fragrant white or pinkish flowers. These blooms are rich in nectar and attract a wide variety of pollinators—especially bumblebees and small butterflies—when floral resources are otherwise scarce.
Details
Height36” - 96”
Spread60"
Bloom SeasonJuly – August
Soil Types
Clay
Loam
Sand
Soil Moisture
Medium
Moist
Wet
Sun Exposure
Full Shade
Part Sun
Full Sun
Range Map
Native
No current
record
record
Ecological Benefits
Maintenance Tips
- Prune in late winter or early spring if shaping is desired; blooms form on new growth.
- Mulch annually to retain soil moisture and improve soil structure.
- Divide suckers if you want to manage spread or propagate new plants.
- Tolerates wet feet—excellent for rain gardens and bioswales.








