tanacetum vulgare, cirsium vulgare, poa palustris, artemisia vulgaris, dactylis glomerata, poa pratensis, agrostis stolonifera, arctium lappa, chenopodium album, cirsium arvense, echinops sphaerocephalus, elymus repens, hypericum perforatum, lolium perenne, oenothera biennis, potentilla reptans, atriplex sagittata, melilotus officinalis, rumex crispus, solidago canadensis, verbascum thapsus