Buffers and landscaping. Landscaping shall be provided to promote a desirable visual environment, to accentuate building design, define entranceways, and screen parking areas. The landscape design shall create visual diversity and contrast through variation in size shape, texture and color. All areas that are not improved with buildings, structures and other man-made improvements shall be landscaped with trees, shrubs, ground cover, street furniture, sculpture or other design amenities and shall be subject to the following:
(a) A minimum landscaped buffer of 10 feet shall be maintained along the front and side yards of the site. Buffer areas may overlap required setbacks.
(b) Trees shall be installed at a minimum caliper of 2.5 inches to 3.5 inches caliper with a canopy height of at least the minimum American Nursery and Landscape Association Standards for this caliper but not less than six feet to eight feet (deciduous and evergreen).
(c) Shrubs shall be planted at a minimum size of 18 inches to 24 inches.
(d) All plant material shall meet the minimum latest American Nursery and Landscape Association standards.
(e) Existing vegetation within required buffer areas shall be preserved, as determined appropriate. It shall be supplemented where necessary to provide the required ten-foot planted buffer.
(f) Irrigation shall be provided for all buffer plantings and landscaped areas in a manner appropriate for the specific plant species.
(g) Preference shall be given to plants indigenous to the region and invasive species are to be avoided. No less than 30% of the plantings shall be indigenous to the region.
(h) Landscaping within sight triangles shall not exceed a mature height of 30 inches. Shade trees shall be pruned up to an eight-foot branching height above grade.