(a) The commissioner shall make surveys for noxious weeds and when it is determined that an infestation exists within the state he may, by regulation after public hearing held in accordance with procedures set forth in chapter twenty-nine-a of this code, declare the weed to be noxious.
(b) Multiflora rose, Rosa multiflora, is a detriment to agriculture in West Virginia and is hereby declared to be a noxious weed.