artemisia absinthium, polygonum aviculare, achillea millefolium, carduus crispus, cynoglossum officinale, erigeron canadensis, geranium dissectum, lolium perenne, marrubium vulgare, plantago lanceolata, plantago major, poa annua, saponaria officinalis, setaria pumila, setaria viridis, solanum nigrum, urtica dioica, verbascum phoeniceum, verbena officinalis, xanthium strumarium