alopecurus geniculatus, cerastium holosteoides, glyceria fluitans, lolium perenne, matricaria discoidea, persicaria hydropiper, plantago major, plantago uliginosa, poa annua, poa trivialis, polygonum aviculare, ranunculus repens, ranunculus sceleratus, rorippa palustris, rumex crispus, stellaria media, trifolium repens