portulaca oleracea, oxalis corniculata, oxalis stricta, stellaria media, amaranthus hybridus, amaranthus retroflexus, bidens frondosa, capsella bursa-pastoris, echinochloa crus-galli, erigeron canadensis, euphorbia peplus, galinsoga parviflora, persicaria maculosa, picris hieracioides, plantago major, poa annua, polygonum aviculare, rorippa sylvestris, setaria viridis, verbascum phoeniceum