secale cereale, centaurea cyanus, apera spica-venti, erigeron canadensis, scleranthus annuus, setaria pumila, achillea millefolium, agrostemma githago, anthemis arvensis, aphanes arvensis, bromus secalinus, chenopodium album, elymus repens, gemmabryum caespiticium, gnaphalium uliginosum, persicaria lapathifolia, polygonum aviculare, riccia glauca, trifolium arvense, trifolium campestre, veronica persica, viola arvensis