onopordum acanthium, artemisia vulgaris, erigeron canadensis, medicago lupulina, melilotus officinalis, chenopodium album, achillea millefolium, carduus acanthoides, lepidium draba, oenothera biennis, poa compressa, solidago canadensis, tripleurospermum inodorum, amaranthus retroflexus, arctium lappa, atriplex tatarica, bromus tectorum, capsella bursa-pastoris, cichorium intybus, cirsium arvense, echium vulgare, elymus repens, euphorbia helioscopia, lactuca serriola, lamium album, lolium perenne, lotus corniculatus, papaver rhoeas, pastinaca sativa, picris hieracioides, plantago lanceolata, plantago major, poa annua, poa pratensis, rumex obtusifolius, setaria pumila, sisymbrium loeselii, stellaria media, trifolium repens