polygonum aviculare, setaria pumila, equisetum arvense, spergularia rubra, anthemis arvensis, arnoseris minima, centaurea cyanus, convolvulus arvensis, crepis tectorum, galeopsis ladanum, gnaphalium uliginosum, persicaria lapathifolia, rumex acetosella, scleranthus annuus, trifolium arvense, viola arvensis