Landscaping shall be provided to promote a desirable visual environment, to accentuate building design, define entranceways, screen parking areas, mitigate adverse visual impacts, provide windbreaks for winter winds and summer cooling for buildings, and enhance buffer areas. Plants and other landscaping materials shall be selected in terms of aesthetic and functional considerations. The landscape design shall create visual diversity and contrast through variation in size, shape, texture and color. The selection of plants in terms of susceptibility to disease and insect damage, wind and ice damage, habitat, soil conditions, growth rate, longevity, root pattern, maintenance requirements, etc., shall be considered.