Clethra alnifolia 'Ruby Spice' – Deep Pink Summersweet for Shade Gardens

Summersweet 'Ruby Spice'

Clethra alnifolia 'Ruby Spice' is a striking sport of 'Pink Spires', distinguished by its darker pink, fragrant bottlebrush flowers that bloom in late summer to early fall. This upright, rounded shrub reaches 4 to 6 feet tall and nearly as wide, making it suitable for beds, borders, woodland gardens, shade gardens, or waterside plantings.

Seasonal Interest

The fragrant flowers attract butterflies, bees, and other beneficial insects. In autumn, the foliage turns a clear yellow, extending the season of interest well beyond the bloom period.

Noteworthy Characteristics

• Fragrant, deep pink flowers
• Attracts butterflies and pollinators
• Tolerates full shade
• Native to the eastern U.S.

Growing Conditions & Care

Provide full sun to part shade and fertile, preferably acidic, medium to wet soil. 'Ruby Spice' tolerates clay soil and full shade, making it versatile for challenging sites.

Propagation

Take greenwood cuttings in early summer.

Potential Problems

Problems are infrequent.

Quick Reference

• Height/Spread: 3–6 ft.
• Light: Full sun to part shade
• Moisture: Medium to wet
• Maintenance: Low
• Bloom Time: Late summer to early fall
• Flower Color: Pink
• Uses: Beds, borders, waterside, woodland, cottage, shade gardens
• Type: Shrub