echinochloa crus-galli, lipandra polysperma, panicum capillare, carex hirta, equisetum arvense, oxalis stricta, persicaria lapathifolia, scrophularia nodosa, setaria pumila, symphytum officinale, verbena officinalis, achillea millefolium, agrostis stolonifera, amaranthus retroflexus, chenopodium album, cirsium vulgare, dactylis glomerata, digitaria sanguinalis, erigeron annuus, hypericum humifusum, mercurialis annua, persicaria maculosa, plantago major, potentilla reptans, ranunculus repens, rumex obtusifolius, solanum nigrum, solidago canadensis, sonchus oleraceus, veronica persica