eragrostis pilosa, matricaria discoidea, polygonum aviculare, amaranthus retroflexus, eragrostis minor, artemisia vulgaris, chenopodium album, cynodon dactylon, digitaria sanguinalis, erigeron canadensis, lolium perenne, medicago lupulina, plantago major, portulaca oleracea, rorippa austriaca, tripleurospermum inodorum