plantago coronopus, erigeron canadensis, lepidium virginicum, poa annua, capsella bursa-pastoris, cerastium glomeratum, crepis capillaris, daucus carota, festuca bromoides, hordeum murinum, hypochaeris radicata, lactuca virosa, lepidium coronopus, lolium perenne, matricaria discoidea, polygonum aviculare, sonchus oleraceus, trifolium repens, veronica agrestis