lactuca serriola, convolvulus arvensis, erigeron canadensis, solanum nigrum, chenopodium album, medicago lupulina, portulaca oleracea, setaria viridis, sonchus asper, amaranthus retroflexus, arenaria serpyllifolia, artemisia absinthium, descurainia sophia, euphorbia helioscopia, lamium amplexicaule, plantago lanceolata, polygonum aviculare, senecio vulgaris, silene vulgaris, verbena officinalis, veronica persica, veronica polita