cynodon dactylon, ambrosia artemisiifolia, setaria pumila, chenopodium album, eragrostis minor, erigeron annuus, erigeron canadensis, lolium perenne, lotus corniculatus, plantago arenaria, plantago lanceolata, amaranthus retroflexus, artemisia vulgaris, bromus hordeaceus, bromus sterilis, cichorium intybus, crepis biennis, dactylis glomerata, digitaria sanguinalis, medicago lupulina, poa pratensis, polygonum aviculare, portulaca oleracea, silene vulgaris, trifolium arvense, trifolium repens