polygonum aviculare, descurainia sophia, sisymbrium officinale, achillea collina, agrostis capillaris, arctium lappa, argentina anserina, capsella bursa-pastoris, cirsium arvense, erigeron canadensis, lactuca serriola, lolium perenne, lotus corniculatus, matricaria discoidea, poa annua, silene latifolia, urtica dioica