sagina procumbens, poa annua, polygonum aviculare, portulaca oleracea, erigeron canadensis, crepis foetida, setaria viridis, amaranthus hybridus, erigeron annuus, fraxinus excelsior, geum urbanum, plantago major, sonchus oleraceus, chelidonium majus, sisymbrium officinale, veronica hederifolia