Clethra alnifolia ‘Hummingbird’ is a hardy, deciduous shrub grown for its abundant summer flower spikes and strong appeal to pollinators. From mid- to late summer, upright racemes of fragrant, pure white flowers rise above rich green foliage, creating a striking display that attracts bees, butterflies and hummingbird-mimicking insects. The compact, rounded habit makes it suitable for borders, woodland edges and cottage-style gardens, while its reliable performance in moist, well-drained acidic to neutral soils ensures consistent health and colour. Thriving in full sun or light shade and fully hardy in UK conditions, ‘Hummingbird’ combines long-lasting blooms with low maintenance.