bidens frondosa, echinochloa crus-galli, persicaria lapathifolia, tripleurospermum inodorum, alopecurus geniculatus, artemisia vulgaris, chenopodium ficifolium, erysimum cheiranthoides, poa annua, poa trivialis, polygonum aviculare, veronica anagallis-aquatica, agrostis stolonifera, apera spica-venti, atriplex prostrata, atriplex sagittata, bidens tripartita, brassica nigra, capsella bursa-pastoris, cirsium arvense, epilobium ciliatum, epilobium hirsutum, erigeron canadensis, galinsoga parviflora, galinsoga quadriradiata, galium rivale, lactuca serriola, lipandra polysperma, lolium perenne, matricaria chamomilla, matricaria discoidea, oxybasis glauca, phalaris arundinacea, plantago uliginosa, poa palustris, ranunculus sceleratus, rorippa amphibia, rorippa palustris, rumex maritimus, rumex obtusifolius, sonchus arvensis, stellaria aquatica, tanacetum vulgare, veronica beccabunga, alopecurus pratensis, daucus carota, lepidium ruderale, lysimachia arvensis, lythrum salicaria, plantago lanceolata, ranunculus repens, trifolium hybridum