hordeum murinum, convolvulus arvensis, arctium lappa, arenaria serpyllifolia, artemisia vulgaris, atriplex patula, capsella bursa-pastoris, crepis foetida, erigeron canadensis, erodium cicutarium, geum urbanum, lamium amplexicaule, lepidium draba, lolium perenne, stellaria media, veronica polita