poa annua, capsella bursa-pastoris, viola arvensis, elymus repens, stellaria media, arabidopsis thaliana, draba verna, lamium amplexicaule, matricaria discoidea, myosotis arvensis, tripleurospermum inodorum, veronica arvensis, veronica triphyllos, crepis tectorum, papaver rhoeas, roemeria argemone