erigeron canadensis, lactuca serriola, achillea millefolium, amaranthus albus, amaranthus retroflexus, artemisia vulgaris, capsella bursa-pastoris, chenopodium album, matricaria discoidea, polygonum aviculare, arctium lappa, arrhenatherum elatius, bromus tectorum, calamagrostis epigejos, carduus acanthoides, convolvulus arvensis, linaria vulgaris, lolium perenne, plantago major, poa compressa, sinapis arvensis