Chinese Wisteria Boskoop A magnificent but very large climbing plant, Wisteria sinensis Boskoop is a fast-growing, long-lived, deciduous climber which twines anticlockwise round its supports. It is best grown along strong galvanised wires attached to a sunny wall of a house – it is too heavy for all but the strongest, masonry pergolas. The beautiful green, compound leaves are heavily divided into long, graceful leaflets. In May, big, cascading clusters of scented, purple, pea-like flowers hang down from the stems; they are very attractive to bees. Chinese wisteria Boskoop will need pruning twice a year, in February and after flowering. Site: ShelteredSoil: Any fertile, moist but well-drained soilPosition: Full sun; tolerates partial shadeSeason of interest: May in particularHardiness: Fully hardyHeight: 20-33’ (6-10m); Spread