hordeum murinum, bromus sterilis, descurainia sophia, achillea millefolium, carduus acanthoides, chenopodium album, cichorium intybus, daucus carota, erigeron canadensis, lactuca serriola, lepidium draba, lepidium ruderale, lolium perenne, medicago sativa, papaver rhoeas, plantago lanceolata, poa annua, polygonum aviculare, prunella vulgaris, rorippa sylvestris, rumex pulcher, sisymbrium officinale, trifolium campestre