poa trivialis, agrostis stolonifera, lolium perenne, poa pratensis, poa annua, alopecurus geniculatus, glyceria fluitans, stellaria media, atriplex patula, atriplex prostrata, chenopodium ficifolium, persicaria hydropiper, polygonum aviculare, ranunculus acris, ranunculus repens, lipandra polysperma, rorippa palustris