tripleurospermum inodorum, erigeron canadensis, agrostis gigantea, apera spica-venti, artemisia vulgaris, capsella bursa-pastoris, descurainia sophia, echium vulgare, elymus repens, lactuca serriola, lepidium densiflorum, lepidium ruderale, lolium perenne, matricaria discoidea, melilotus albus, phalaris arundinacea, trifolium repens, vicia cracca