symphyotrichum ciliatum, erigeron canadensis, lolium perenne, lotus tenuis, polygonum aviculare, achillea collina, amaranthus albus, amaranthus blitoides, artemisia annua, bidens cernuus, cichorium intybus, convolvulus arvensis, daucus carota, echinochloa crus-galli, elymus repens, eragrostis minor, inula britannica, onopordum acanthium, oxybasis urbica, persicaria lapathifolia, plantago major, portulaca oleracea, pulicaria vulgaris, tripleurospermum inodorum