Italian Buckthorn. Evergreen shrub for a hedge or screening that has dense dark green glossy foliage throughout the year. The small spring-blooming greenish-yellow flowers produce reddish fruit that ages to a dark purple color. Upright growing, reaching to 12-15' tall by about 6' wide. Full sun to part shade in just about any soil where it can tolerate heat, wind and drought but also tolerates regular water.