matricaria chamomilla, polygonum aviculare, bromus hordeaceus, capsella bursa-pastoris, convolvulus arvensis, cynodon dactylon, echinochloa crus-galli, erigeron canadensis, lepidium ruderale, malva pusilla, plantago lanceolata, poa annua, trifolium repens, veronica arvensis, xanthium spinosum