plantago major, lolium perenne, poa annua, achillea millefolium, capsella bursa-pastoris, daucus carota, erigeron canadensis, malva sylvestris, matricaria discoidea, polygonum aviculare, rorippa islandica, sisymbrium officinale, trifolium pratense, trifolium repens, tripleurospermum inodorum