poa annua, matricaria chamomilla, stellaria media, apera spica-venti, aphanes arvensis, arabidopsis thaliana, gnaphalium uliginosum, lolium perenne, myosotis arvensis, poa trivialis, tripleurospermum inodorum, veronica hederifolia, viola arvensis, artemisia vulgaris, lamium amplexicaule, matricaria discoidea