Provide good drainage. Most plants suitable for rock Gardens require a well-drained soil. For most plants, incorporate organic matter into heavier clay soils to improve texture and provide better drainage. A rock Garden should be no larger than can be easily maintained. Rock Gardens have high maintenance requirements.
Weed control is the biggest problem.
Plant a variety of species, repeating some species several times to make the Garden look natural. Ideally, rock Garden plants should spread slowly. Take care not to overplant. Plant Selection Many types of plants are suitable for rock Gardens. Generally, plants that are low growing and have a clumping habit are preferred.