tanacetum vulgare, elymus repens, arctium lappa, cirsium vulgare, convolvulus arvensis, dactylis glomerata, echinops sphaerocephalus, lolium perenne, tripleurospermum inodorum, artemisia vulgaris, cirsium arvense, daucus carota, poa palustris, populus tremula, potentilla reptans, solidago canadensis