hordeum murinum, convolvulus arvensis, lolium perenne, artemisia vulgaris, ballota nigra, capsella bursa-pastoris, thinopyrum intermedium, dactylis glomerata, erigeron canadensis, geranium pusillum, onopordum acanthium, papaver rhoeas, plantago lanceolata, poa annua, poa pratensis, sisymbrium officinale, urtica dioica