Spiraea × vanhouttei (Vanhoutte spirea)

Spiraea × vanhouttei, called Vanhoutte spirea or bridalwreath, is a vase-shaped, deciduous shrub with branching that arches gracefully toward the ground. It is a hybrid cross between S. trilobata x S. cantoniensis.  Genus name comes from the Greek word speira meaning wreath in reference to the showy flower clusters seen on most shrubs in the genus.  Drought tolerant; very hardy; moderate to rapid growth.