lepidium didymum, lysimachia arvensis, veronica persica, helminthotheca echioides, medicago lupulina, oxalis corniculata, paspalum distichum, persicaria maculosa, poa annua, polygonum aviculare, sinapis arvensis, solanum nigrum, erigeron bonariensis, plantago lanceolata, senecio vulgaris, sonchus oleraceus, symphyotrichum squamatum