Prior to the adoption of Ord. 2005-01 on 04/06/2005, Section 16.04.327 read as follows.

Some combination of planted trees, shrubs, vines, groundcover, flowers or lawns. In addition, the combination or design may include rocks, boulders and screens, bark, walls, fences, or benches, but such objects ~~alone~~ shall not exceed 20% of the landscaping requirement. The selected combination of objects for landscaping purposes shall be arranged in a harmonious manner in conformance with this Title. (Ord. No. 94-15, Enacted, 07/14/94)