oxalis stricta, digitaria sanguinalis, poa annua, bellis perennis, cerastium pumilum, echinochloa crus-galli, erigeron annuus, erigeron canadensis, myosotis arvensis, plantago major, artemisia vulgaris, matricaria discoidea, polygonum aviculare, scleranthus annuus, sonchus asper, trifolium repens, veronica persica, argentina anserina, capsella bursa-pastoris, cichorium intybus, equisetum arvense, persicaria maculosa, potentilla reptans