Native to the United States, Hydrangea arborescens is an upright, deciduous shrub that prefers moist, well-drained soils in part shade. WHITE DOME® is a vigorous cultivar growing 3–5 feet tall with strong stems and large dark green leaves. It is named for its dome-shaped inflorescences of white flowers displaying symmetrical, rounded heads reaching 6–10 inches across. Flowers bloom in early June and continue through August. Bloom occurs on new wood, so plants may be pruned back to the ground in late winter to encourage strong stem growth. Plant ‘Dardom’ in masses in the shrub border or use as a specimen in perennial beds.