xanthium strumarium, lactuca serriola, rumex palustris, bidens tripartita, calystegia sepium, capsella bursa-pastoris, carex hirta, chenopodium album, erigeron canadensis, persicaria amphibia, poa angustifolia, potentilla reptans, ranunculus sceleratus, rorippa sylvestris, taraxacum minimum, tripleurospermum inodorum