text: echinochloa crus-galli, galinsoga parviflora, solanum nigrum, capsella bursa-pastoris, chenopodium album, elymus repens, geranium pusillum, lolium perenne, matricaria chamomilla, matricaria discoidea, persicaria lapathifolia, persicaria maculosa, plantago uliginosa, poa annua, rorippa palustris, stellaria media, alopecurus geniculatus, cirsium arvense, erigeron canadensis, plantago major, rumex obtusifolius, sisymbrium officinale, trifolium repens