A lovely choice for those who have enough blue hydrangeas. Hydrangea macrophylla ’Ami Pasquier’ has medium-sized, crimson blooms. It resists going blue except on the most acidic soil where it shifts to a wine-purple. Foliage is a glossy green. Deciduous, about 4’ tall and wide, for part shade. Long considered one of the best. For confirmation see "The Hydrangeas" by Michael Haworth-Booth (1950), "Hydrangeas for American Gardens by Michael A. Dirr (2004) and "Encyclopedia of Hydrangeas" by the Van Gelderens. It is a strong plant assessed over many years by gardeners and experts and found to perform. Zones 6-9.