erigeron canadensis, achillea millefolium, oxalis stricta, artemisia vulgaris, chenopodium album, cirsium arvense, convolvulus arvensis, daucus carota, descurainia sophia, galinsoga parviflora, lactuca serriola, medicago lupulina, medicago sativa, mentha arvensis, plantago major, ranunculus repens, salsola tragus, setaria pumila, stachys annua, tripleurospermum inodorum, chaenorhinum minus