Spirea
Spiraea japonica and Spiraea x bumalda
Hardy to zone 3 with protection
Grows .6-1.2 meters (2-4 feet) tall and wide. Blooms throughout summer and often into fall. Prefers sun to light shade. For the best foliage colour plant in full sun. Prune in late winter or early spring. Cut back by at least one third each year. Remove finished flowers in summer. Severe pruning can rejuvenate older, leggy shrubs.
When planting Spiraea bumalda ‘Frobelli’ as a hedge, space 3’-4’ apart. Cut back by at least 1/3 in spring or fall.
