galinsoga quadriradiata, echinochloa crus-galli, equisetum arvense, persicaria maculosa, rorippa sylvestris, amaranthus powellii, persicaria mitis, poa annua, setaria pumila, stachys palustris, stellaria media, symphytum officinale, amaranthus blitum, amaranthus retroflexus, capsella bursa-pastoris, chenopodium album, diplotaxis tenuifolia, erigeron annuus, galinsoga parviflora, helianthus tuberosus, heracleum sphondylium, lipandra polysperma, plantago major, polygonum aviculare, sonchus asper, trifolium pratense, trifolium repens