centaurea cyanus, stellaria media, aphanes arvensis, capsella bursa-pastoris, cerastium holosteoides, chenopodium album, cirsium arvense, gnaphalium uliginosum, juncus bufonius, lamium purpureum, lycopsis arvensis, matricaria chamomilla, myosotis arvensis, persicaria lapathifolia, plantago uliginosa, poa annua, sagina procumbens, scleranthus annuus, sonchus asper, tripleurospermum inodorum, veronica arvensis, vicia hirsuta, viola arvensis, argentina anserina, rumex crispus, trifolium pratense