All plant material shall meet current standards of the American
Association of Nurserymen, for nursery stock.
Planting on berms should consist of species, which naturally grow
in high, well drained situations. Plants such as arborvitae, birch,
cedar, hemlock, and cypress, which are indigenous to low, moist
situations, should not be used. In addition, plants such as dogwood
and redbud should not be used in a berm area where there is much
exposure to the elements.