polygonum aviculare, erigeron canadensis, apera spica-venti, camelina microcarpa, crepis setosa, erysimum repandum, medicago sativa, oenothera biennis, anthemis cotula, bromus squarrosus, bromus tectorum, chenopodium album, convolvulus arvensis, juncus compressus, lactuca saligna, lactuca serriola, lappula squarrosa, lepidium ruderale, lolium perenne, medicago lupulina, papaver rhoeas, plantago lanceolata, poa annua, populus nigra, potentilla supina, rorippa sylvestris, rumex crispus, rumex palustris, secale cereale, tripleurospermum inodorum