New York Invasive Species Information - Multiflora Rose The NY Invasive Species Clearing House “noxious plant.” The NY Invasive Species Clearing House The NY Invasive Species Clearing House Multiflora Rose The NY Invasive Species Clearing House The NY Invasive Species Clearing House The NY Invasive Species Clearing House considered seriously invasive by US authorities The NY Invasive Species Clearing House The NY Invasive Species Clearing House The NY Invasive Species Clearing House The NY Invasive Species Clearing House