sisymbrium altissimum, achillea millefolium, arrhenatherum elatius, bromus tectorum, calamagrostis epigejos, convolvulus arvensis, elymus repens, erigeron canadensis, artemisia vulgaris, chenopodium album, cirsium arvense, echium vulgare, melilotus albus, pastinaca sativa, poa compressa, poa pratensis, solidago canadensis, tripleurospermum inodorum