Rhamnus pumila, dwarf buckthorn Rhamnus is a genus of about 110 accepted species of shrubs or small trees, commonly known as buckthorns, in the family Rhamnaceae.
Plant buckthorn in spring, and water it regularly during the first growing season. After establishing a strong root system, it will better tolerate dry conditions.
Grow in well-drained, moderately fertile soil in a sheltered, sunny site. Protect in winter in cold areas.
Prune buckthorn as needed in spring based on the type. Fine Line buckthorn displays an upright, columnar habit and rarely requires pruning.