Hummingbird Summersweet

Clethra alnifolia 'Hummingbird'

flower

Hummingbird is a compact, free-flowering summersweet, a native shrub that solves two hard garden problems at once: it blooms beautifully in shade and it thrives in damp soil. This dwarf selection forms a dense mound two to four feet tall, and in the heat of mid to late summer - when little else is flowering - it sends up upright spikes of small white flowers with a rich, spicy-sweet fragrance that perfumes the garden and draws clouds of bees, butterflies, and hummingbirds. Native to wet woodlands and stream banks along the eastern seaboard, it tolerates wet ground, clay, and salt, turns a clear yellow in fall, and is altogether one of the best shrubs for a shady, moist, or rain-garden spot.

✅ Plant alongside

Good neighbors that attract beneficial insects or deter pests

• Ferns — Thrive in the same moist, acid shade and fill the ground around the summersweet
• Hosta — Bold shade foliage that shares the damp, rich soil and contrasts the flower spikes
• Oakleaf Hydrangea — A larger native shade shrub that blooms earlier, extending the season in the same moist woodland bed

🛡️ Pest & disease prevention

Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide

• Spider mites →

  Appear in hot, dry conditions, which also stress this moisture-loving shrub - keep the soil moist and rinse the foliage; drought is the real trigger

• Aphids →

  Cluster on tender new growth - rinse off with water and encourage ladybugs

• Leaf spot →

  Minor fungal spotting in wet weather - give airflow and clear fallen leaves; rarely serious on this tough native

• Powdery mildew →

  A white film in humid, shady, crowded spots - space for airflow; usually cosmetic

🌸 Blooms & cutting

Summersweet makes a sweetly fragrant cut flower - snip the white spikes in the cool morning as the lower florets open for a scented summer arrangement. In the garden it is very low maintenance: prune lightly in late winter or early spring if needed (it blooms on new wood), and decide whether to let it spread by suckers into a naturalized colony in a damp spot or to remove the suckers to keep it as a single tidy mound. Above all, keep it from drying out, and it will reward you with fragrance in the dog days of summer.

🥗 Nutrition & benefits

A native ornamental of excellent pollinator value - because it flowers in the heat of late summer when little else blooms, its fragrant spikes are a vital nectar source for bees, butterflies, and hummingbirds. Grown for fragrance and wildlife; non-toxic and safe around pets and children.