ambrosia artemisiifolia, artemisia absinthium, artemisia campestris, artemisia vulgaris, bromus squarrosus, bromus tectorum, calamagrostis epigejos, chenopodium album, convolvulus arvensis, eragrostis minor, erigeron canadensis, hordeum murinum, oenothera biennis, poa angustifolia, portulaca oleracea, salsola tragus, setaria viridis, xanthium orientale