urtica dioica, digitalis purpurea, erigeron canadensis, hirschfeldia incana, hordeum murinum, lapsana communis, verbena officinalis, alliaria petiolata, geranium dissectum, lolium perenne, polygonum aviculare, sisymbrium officinale, sonchus oleraceus, capsella bursa-pastoris, lepidium didymum, poa annua