helianthus annuus, ambrosia artemisiifolia, bromus catharticus, erigeron floribundus, centaurea melitensis, daucus carota, digitaria sanguinalis, foeniculum vulgare, malva sylvestris, medicago sativa, poa annua, setaria faberi, symphyotrichum squamatum, anthemis arvensis, artemisia vulgaris, centranthus ruber, chenopodium album, cichorium intybus, helminthotheca echioides, sonchus oleraceus