polygonum aviculare, matricaria discoidea, sisymbrium loeselii, arctium tomentosum, artemisia vulgaris, atriplex patula, capsella bursa-pastoris, chenopodium album, elymus repens, lolium perenne, plantago major, poa annua, secale cereale, silene latifolia, sisymbrium officinale, amaranthus retroflexus, descurainia sophia, erigeron canadensis, lactuca serriola, tripleurospermum inodorum