amaranthus retroflexus, galinsoga parviflora, chenopodium album, portulaca oleracea, solanum nigrum, achillea millefolium, amaranthus blitum, amaranthus powellii, cirsium arvense, convolvulus arvensis, echinochloa crus-galli, fallopia convolvulus, oxybasis glauca, persicaria lapathifolia, senecio vulgaris, sonchus oleraceus, urtica urens, poa annua