zea mays, echinochloa crus-galli, amaranthus retroflexus, holcus lanatus, lipandra polysperma, poa trivialis, ranunculus repens, rorippa islandica, sanguisorba officinalis, silene flos-cuculi, achillea millefolium, calystegia sepium, capsella bursa-pastoris, cerastium holosteoides, chenopodium album, cirsium oleraceum, equisetum palustre, erigeron canadensis, medicago lupulina, persicaria lapathifolia, plantago lanceolata, plantago major, poa pratensis, setaria pumila, solanum nigrum, stellaria aquatica, stellaria media, symphytum officinale, lythrum salicaria