zea mays, matricaria chamomilla, elymus repens, lolium perenne, poa annua, capsella bursa-pastoris, chenopodium ficifolium, cirsium arvense, persicaria maculosa, poa trivialis, polygonum aviculare, solanum nigrum, stellaria media, chenopodium album, fallopia convolvulus, gnaphalium uliginosum, sisymbrium officinale, sonchus asper