carduus nigrescens, cirsium arvense, elymus repens, artemisia verlotiorum, melilotus albus, thinopyrum intermedium, xanthium orientale, centaurea aspera, convolvulus arvensis, lactuca serriola, populus canadensis, saponaria officinalis, silene latifolia, chenopodium album, plantago lanceolata, potentilla reptans, poterium sanguisorba