artemisia vulgaris, elymus repens, helianthus tuberosus, arctium lappa, lolium perenne, tripleurospermum inodorum, cirsium arvense, poa annua, rumex obtusifolius, bromus sterilis, chenopodium album, lactuca serriola, pastinaca sativa, poa nemoralis, solidago canadensis, calamagrostis epigejos, dactylis glomerata, fallopia convolvulus, medicago sativa, polygonum aviculare, capsella bursa-pastoris, erigeron canadensis, solidago gigantea, sonchus oleraceus