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 × S. cantoniensis. It typically grows 5-8’ tall with a spread to 7-10’ wide. It is particularly noted for its showy spring bloom. Tiny white flowers (each to 1/3” diameter) appear in late April to May in umbellate clusters (to 2” wide) that profusely cover the leafy branching. Small, rhombic to obovate, coarsely serrate, dark blue-green leaves (to 1.5” long) may have or at least suggest 3-5 lobes. Fall color is usually undistinguished, but attractive purplish hues may sometimes develop.
Easily grown in average, medium moisture, well-drained soils in full sun. Tolerates light shade, a wide range of soils and some drought. Prune as needed immediately after flowering.