Clethra alnifolia 'Sixteen Candles' – Compact White-Flowered Summersweet

Sweet Pepperbush 'Sixteen Candles'

Clethra alnifolia 'Sixteen Candles' is a newer, compact cultivar of the popular native summersweet. Reaching 3 to 5 feet tall, it is selected for its sturdy branching system and large, upright white flowering "candles" up to 6 inches long that bloom for 4 to 6 weeks in summer. The aromatic flowers are a magnet for butterflies.

Seasonal Interest

In autumn, the foliage turns an attractive yellow, adding a second season of interest.

Growing Conditions & Care

Like other summersweets, 'Sixteen Candles' loves wet locations in partial shade but performs well in average garden soils in full sun. Amend soil with composted organic matter to encourage root spread. Wandering roots and stems can be easily chopped off and transplanted.

Propagation

Sow seed at 43 to 54°F in spring or autumn. Root greenwood cuttings in early summer.

Potential Problems

Fungal dieback and root rot can occur.

Quick Reference

• Height/Spread: 3–6 ft.
• Light: Full sun to part shade
• Moisture: Medium
• Maintenance: Low
• Bloom Time: Summer to fall
• Flower Color: White
• Uses: Beds, borders, shade, woodland gardens
• Type: Shrub
• Special: Deer tolerant