hordeum vulgare, viola arvensis, centaurea cyanus, lapsana communis, papaver rhoeas, scleranthus annuus, aphanes arvensis, artemisia vulgaris, avena sativa, capsella bursa-pastoris, chenopodium album, convolvulus arvensis, galinsoga quadriradiata, galium aparine, gnaphalium uliginosum, lamium purpureum, myosotis arvensis, oxalis acetosella, polygonum aviculare, spergula arvensis, trifolium repens