echinochloa crus-galli, persicaria lapathifolia, setaria pumila, bidens tripartita, lipandra polysperma, mentha arvensis, plantago major, ranunculus repens, agrostis stolonifera, amaranthus powellii, calystegia sepium, capsella bursa-pastoris, erigeron annuus, galinsoga parviflora, panicum capillare, poa annua, portulaca oleracea, solidago canadensis, tripleurospermum inodorum, tussilago farfara