festuca heterophylla, artemisia vulgaris, elymus repens, lactuca serriola, sisymbrium loeselii, artemisia absinthium, chenopodium album, equisetum arvense, erigeron canadensis, polygonum aviculare, rumex confertus, ambrosia artemisiifolia, berteroa incana, bromus squarrosus, dactylis glomerata, oenothera biennis, plantago lanceolata, setaria viridis, silene latifolia