Sapium Japonicum. This deciduous shrub is a native of Japan, China and Korea. It is rarely offered for sale but when it is should be snapped up quickly by the experienced gardener. The shrub is a little hard to grow and need protection from cold winters and frosts and slow to reach maturity but the patient gardener will be rewarded with one of the finest autumn displays around. deep rich brilliant ruby red leaves in autumn. slightly bluish leaves in spring summer. In summer catkin like flowers. Full sun to part shade. 4m by 4m.