chenopodium album, cynodon dactylon, setaria viridis, elymus repens, setaria pumila, digitaria sanguinalis, sorghum halepense, amaranthus hybridus, apera spica-venti, portulaca oleracea, convolvulus arvensis, malva sylvestris, solanum dulcamara, sonchus asper, fallopia convolvulus, capsella bursa-pastoris, erigeron canadensis