tanacetum vulgare, cirsium vulgare, linaria vulgaris, artemisia vulgaris, urtica dioica, carduus nutans, elymus repens, lolium perenne, melilotus officinalis, poa palustris, sedum spurium, solidago canadensis, tripleurospermum inodorum, atriplex sagittata, hypericum perforatum, lactuca serriola, poa annua, potentilla reptans