convolvulus arvensis, cynodon dactylon, amaranthus retroflexus, digitaria sanguinalis, erigeron canadensis, hibiscus trionum, polygonum aviculare, setaria verticillata, setaria viridis, chenopodiastrum hybridum, chenopodium album, heliotropium europaeum, portulaca oleracea, sinapis arvensis, solanum nigrum, sonchus asper, xanthium spinosum