symphyotrichum ciliatum, amaranthus albus, eragrostis minor, erigeron canadensis, polygonum aviculare, amaranthus blitoides, artemisia annua, bidens cernuus, chenopodium album, daucus carota, digitaria sanguinalis, echinochloa crus-galli, inula britannica, lepidium ruderale, lolium perenne, lotus tenuis, persicaria lapathifolia, plantago major, poa annua, setaria pumila, tripleurospermum inodorum, xanthium strumarium