amaranthus blitoides, convolvulus arvensis, portulaca oleracea, amaranthus crispus, amaranthus retroflexus, chenopodiastrum murale, polygonum aviculare, setaria viridis, bromus tectorum, chenopodium album, cynodon dactylon, erigeron canadensis, eryngium campestre, marrubium vulgare, xanthium spinosum