scleranthus annuus, spergula arvensis, viola arvensis, avena sativa, persicaria hydropiper, rumex acetosella, anthoxanthum aristatum, arnoseris minima, capsella bursa-pastoris, centaurea cyanus, fallopia convolvulus, holcus lanatus, persicaria maculosa, plantago major, polygonum aviculare, sonchus oleraceus, trifolium repens