viola arvensis, convolvulus arvensis, aphanes arvensis, armoracia rusticana, atriplex patula, centaurea cyanus, chenopodium album, elymus repens, equisetum arvense, fallopia convolvulus, galium aparine, heracleum sphondylium, legousia speculum-veneris, myosotis arvensis, papaver rhoeas, poa annua, stellaria media, trifolium pratense