lepidium ruderale, artemisia vulgaris, chenopodium album, capsella bursa-pastoris, medicago sativa, erigeron canadensis, poa compressa, senecio vulgaris, achillea millefolium, arrhenatherum elatius, lolium perenne, matricaria discoidea, sonchus oleraceus, bromus hordeaceus, sisymbrium officinale, trifolium dubium, daucus carota, plantago major, poa annua, senecio viscosus