ambrosia artemisiifolia, papaver rhoeas, artemisia absinthium, bassia scoparia, berteroa incana, bromus japonicus, bromus tectorum, capsella bursa-pastoris, chenopodium album, crepis foetida, crepis setosa, delphinium consolida, digitaria sanguinalis, erigeron canadensis, hordeum murinum, lactuca serriola, matricaria chamomilla, medicago lupulina, polygonum aviculare, setaria viridis, sisymbrium loeselii, tanacetum vulgare, viola arvensis