centaurea cyanus, stellaria media, poa annua, apera spica-venti, aphanes arvensis, arabidopsis thaliana, capsella bursa-pastoris, cerastium holosteoides, elymus repens, galium aparine, lamium amplexicaule, lysimachia arvensis, myosotis arvensis, myosotis stricta, myosurus minimus, tripleurospermum inodorum, veronica arvensis, veronica triphyllos, viola arvensis, cirsium arvense