The following words, as used in this chapter, shall have the following meanings hereby respectively ascribed thereto:
Any natural person, partnership, association or corporation.
Any Canadian or Russian thistle, chicory, burdock, nettle, poison ivy, sumac, goldenrod, wild lettuce, wild mustard, wild parsley, ragweed, milkweed or any other plant or vegetation whatsoever, not edible or planted for an ornamental or agricultural purpose.