lepidium ruderale, capsella bursa-pastoris, puccinellia distans, artemisia vulgaris, daucus carota, erigeron canadensis, matricaria discoidea, medicago lupulina, plantago major, poa annua, scleranthus annuus, sisymbrium officinale, sonchus asper, tripleurospermum inodorum, vicia hirsuta