cirsium arvense, chenopodium album, elymus repens, erigeron canadensis, lactuca serriola, lolium pratense, poa pratensis, tripleurospermum inodorum, achillea millefolium, atriplex sagittata, calamagrostis epigejos, descurainia sophia, erysimum cheiranthoides, papaver rhoeas, reseda lutea, rumex crispus