polygonum aviculare, puccinellia distans, erigeron canadensis, achillea millefolium, artemisia vulgaris, chenopodium album, digitaria sanguinalis, matricaria discoidea, plantago major, poa annua, poa compressa, capsella bursa-pastoris, cirsium arvense, lolium perenne, scorzoneroides autumnalis, setaria viridis, stellaria media, trifolium repens, tripleurospermum inodorum