atriplex sagittata, artemisia vulgaris, atriplex patula, bromus sterilis, capsella bursa-pastoris, chenopodium album, cirsium arvense, dactylis glomerata, descurainia sophia, equisetum arvense, erigeron canadensis, galinsoga parviflora, lactuca serriola, lepidium ruderale, lolium perenne, sisymbrium officinale, tripleurospermum inodorum