erigeron canadensis, erigeron annuus, lactuca serriola, plantago lanceolata, amaranthus retroflexus, convolvulus arvensis, digitaria sanguinalis, eragrostis minor, galinsoga parviflora, lolium perenne, medicago lupulina, mercurialis annua, panicum miliaceum, plantago major, portulaca oleracea, reseda lutea, senecio vulgaris, setaria pumila, trifolium repens, acer negundo, ambrosia artemisiifolia, lotus corniculatus, silene latifolia