erigeron canadensis, bromus tectorum, amaranthus retroflexus, artemisia absinthium, artemisia scoparia, artemisia vulgaris, atriplex tatarica, berteroa incana, chenopodium album, cyclachaena xanthiifolia, elymus repens, eragrostis minor, poa compressa, setaria pumila, sisymbrium loeselii, xanthium orientale