centaurea cyanus, lolium rigidum, papaver rhoeas, polygonum aviculare, anthemis arvensis, capsella bursa-pastoris, chenopodium album, convolvulus arvensis, lamium amplexicaule, neslia paniculata, viola arvensis, bromus sterilis, bunias erucago, fallopia convolvulus, lactuca serriola, myosotis ramosissima, petrorhagia prolifera, trifolium repens