Wherever feasible, natural vegetation (other than noxious weeds) shall be retained, protected and supplemented [as amended by the State Noxious Weed Control List, including the following: Mile-a-Minute, Kudzu vine, Bull thistle, Musk (Nodding) Thistle, Shattercane, Jimsonweed, Canada Thistle, Johnsongrass, Multiflora Rose, Marijuana, Purple Loosestrife, and Chicory].