stellaria media, plantago major, poa annua, chenopodium album, capsella bursa-pastoris, galinsoga quadriradiata, senecio vulgaris, matricaria discoidea, sonchus oleraceus, artemisia vulgaris, atriplex patula, galinsoga parviflora, lolium multiflorum, rumex obtusifolius, tussilago farfara, solidago canadensis