Deciduous shrubs and subshrubs, with thickets of branching stems. Dark green, glossy and toothed, lobed leaves. Grown for their graceful arching stems and profusion of racemes or panicles of small, bell-shaped or tubular flowers in late spring or early summer. Best in full sun orpartial shade and fertile, well-drained soil. Remove suckers when necessary. Good for shrub borders or woodland gardens.