tussilago farfara, atriplex sagittata, cirsium arvense, daucus carota, elymus repens, rumex crispus, tripleurospermum inodorum, artemisia vulgaris, carduus acanthoides, convolvulus arvensis, epilobium tetragonum, equisetum arvense, erigeron canadensis, lactuca serriola, lepidium draba, lolium perenne, melilotus officinalis, papaver rhoeas, plantago lanceolata, poa compressa, sinapis arvensis, solidago canadensis, trifolium repens