tripleurospermum inodorum, tussilago farfara, artemisia vulgaris, sisymbrium altissimum, atriplex sagittata, carduus acanthoides, cirsium arvense, daucus carota, lactuca serriola, erigeron canadensis, plantago major, poa palustris, polygonum aviculare, sisymbrium loeselii, solidago canadensis, sonchus oleraceus, tanacetum vulgare, persicaria lapathifolia, senecio viscosus