ambrosia artemisiifolia, lactuca serriola, trifolium arvense, berteroa incana, cichorium intybus, cirsium arvense, convolvulus arvensis, lepidium perfoliatum, picris hieracioides, poa angustifolia, bromus tectorum, erigeron acris, lappula squarrosa, linaria genistifolia, melilotus officinalis, reseda lutea, verbascum lychnitis