lactuca serriola, chenopodium album, artemisia vulgaris, convolvulus arvensis, solidago canadensis, achillea millefolium, arctium lappa, atriplex patula, cirsium arvense, daucus carota, descurainia sophia, erigeron canadensis, lepidium ruderale, persicaria lapathifolia, sonchus oleraceus, tanacetum vulgare, tripleurospermum inodorum, urtica dioica