lepidium virginicum, agrostis stolonifera, persicaria maculosa, artemisia vulgaris, barbarea vulgaris, chenopodium album, crepis setosa, echinochloa crus-galli, erigeron canadensis, plantago major, polygonum aviculare, rorippa palustris, senecio inaequidens, tanacetum vulgare, xanthium orientale