oxalis corniculata, portulaca oleracea, lepidium graminifolium, poa annua, amaranthus deflexus, capsella bursa-pastoris, cerastium holosteoides, erigeron canadensis, erigeron sumatrensis, galinsoga quadriradiata, plantago major, polycarpon tetraphyllum, rostraria cristata, sclerochloa dura, senecio vulgaris, setaria verticillata, tagetes minuta