erigeron canadensis, lactuca serriola, senecio viscosus, artemisia vulgaris, chenopodium album, tripleurospermum inodorum, tussilago farfara, descurainia sophia, lepidium ruderale, melilotus albus, senecio vulgaris, sonchus oleraceus, apera spica-venti, epilobium hirsutum, lolium perenne, poa annua, poa compressa, poa palustris, salix caprea, trifolium repens