A large shrub that matures 8-12’ in height. Bright lilac-purple flower clusters appear in the leaf axils of second year wood. Silvery-gray leaves provide added seasonal interest. Exhibits greater cold hardiness than most B. davidii cultivars and does not require annual pruning. Plants grow best in sunny, well-drained sites. Hinkley once mentioned the capacity of this species to be trained into a graceful small tree with arching symmetry, a unique idea that I adore.