artemisia vulgaris, erigeron canadensis, artemisia tournefortiana, melilotus officinalis, sisymbrium loeselii, chenopodium album, amaranthus retroflexus, atriplex sagittata, calamagrostis epigejos, lolium perenne, tripleurospermum inodorum, achillea millefolium, arctium lappa, atriplex oblongifolia, carduus acanthoides, cirsium arvense, plantago major, poa compressa, polygonum aviculare, sisymbrium altissimum, sonchus oleraceus, tussilago farfara