chenopodium album, echinochloa crus-galli, amaranthus retroflexus, cyclachaena xanthiifolia, polygonum aviculare, artemisia absinthium, artemisia vulgaris, atriplex tatarica, bassia prostrata, bidens tripartita, erigeron canadensis, galinsoga parviflora, setaria pumila, sisymbrium loeselii, stachys palustris, tripleurospermum inodorum