xanthium orientale, equisetum arvense, plantago uliginosa, alopecurus pratensis, gnaphalium uliginosum, atriplex prostrata, bidens frondosa, bidens radiata, bidens tripartita, erigeron canadensis, erysimum cheiranthoides, linaria vulgaris, persicaria amphibia, persicaria hydropiper, persicaria lapathifolia, potentilla reptans, rorippa sylvestris, tripleurospermum inodorum