vanhouttei

Spiraea × vanhouttei, commonly known as Vanhoutte spirea or bridal wreath spirea, is a deciduous flowering shrub in the Rosaceae family. It was developed by the Belgian nurseryman François van Houtte in the 19th century and has become one of the most widely planted spireas in temperate gardens.

Description

The shrub forms a robust, arching mound typically reaching 1.5–2.5 meters in height and 2–3 meters in width. New growth is slender, and the branches cascade to create a graceful profile. In late spring to early summer it bears abundant clusters of small white flowers along the length of the stems, producing a bridal wreath effect. Leaves are small, simple, oblong to elliptic, 1–3 cm long with serrated margins; foliage may turn yellow to red in autumn.

Cultivation

Vanhoutte spirea prefers full sun but tolerates light shade. It thrives in well-drained, moderately fertile soil and is adaptable to a range of pH values. It requires regular moisture during establishment and is relatively drought-tolerant once established. Prune after flowering to maintain shape and remove inward-growing wood to improve air circulation.

Pests and diseases

Generally low-maintenance but can be affected by aphids, spider mites, powdery mildew, and leaf spots in humid conditions.

Landscape use

Valued for its early-to-mid spring bloom and graceful form, it is used in borders, mass plantings, foundation plantings, and as a specimen or informal hedge. Propagation is by softwood cuttings taken in summer or by layering.