centaurea cyanus, stellaria media, viola arvensis, apera spica-venti, tripleurospermum inodorum, aphanes arvensis, arabidopsis thaliana, arenaria serpyllifolia, draba verna, myosotis arvensis, myosotis stricta, poa annua, scleranthus annuus, veronica arvensis, capsella bursa-pastoris, cerastium holosteoides, fallopia convolvulus, geranium pusillum, papaver rhoeas, vicia hirsuta