setaria pumila, anthemis arvensis, spergula arvensis, achillea millefolium, cirsium arvense, equisetum arvense, erigeron canadensis, erysimum cheiranthoides, lapsana communis, lysimachia arvensis, lysimachia nummularia, persicaria maculosa, polygonum aviculare, sisymbrium officinale, solidago canadensis, tanacetum vulgare, vicia hirsuta, viola arvensis