Planting materials used in screen plantings shall be at least four feet in height when planted and be of such density as will obscure, throughout the full course of the year, the glare of automobile headlights emitted and other adverse impacts such as, but not limited to: noise, windblown debris and other typical and frequent nuisance problems, as well as create an aesthetically pleasing and attractive view to mask or obscure the use, function, or structure located upon the site.