erigeron canadensis, lactuca serriola, bromus tectorum, lepidium ruderale, achillea millefolium, artemisia vulgaris, capsella bursa-pastoris, matricaria discoidea, poa compressa, polygonum aviculare, senecio vulgaris, sinapis arvensis, atriplex patula, chenopodium album, convolvulus arvensis, galinsoga parviflora, lepidium draba, medicago lupulina