mentha arvensis, arabidopsis thaliana, matricaria chamomilla, veronica arvensis, viola arvensis, capsella bursa-pastoris, centaurea cyanus, elymus repens, gnaphalium uliginosum, juncus bufonius, myosotis arvensis, persicaria hydropiper, plantago uliginosa, poa annua, polygonum aviculare, raphanus raphanistrum, sagina procumbens, scleranthus annuus, spergula arvensis, stellaria media, vicia hirsuta, cirsium arvense, equisetum arvense, galium aparine, sonchus asper