This distinctive Hydrangea macrophylla ‘Hornli’ hails from Wadenswil, Switzerland, and features an abundance of vivid, late-season crimson mophead blooms. Its compact 4 to 5-inch domed flower clusters are densely packed with nonoverlapping sepals and accented by fuzzy, prominent fertile flowers. Ideal for borders, patios, or containers, ‘Hornli’ forms a tidy, vigorous shrub with matte green, red-rimmed, toothed leaves. This variety requires no pruning and fits easily into limited spaces, offering reliable and striking garden appeal.