chenopodium opulifolium, convolvulus arvensis, capsella bursa-pastoris, cerastium holosteoides, elymus repens, erigeron canadensis, hordeum murinum, lolium perenne, onopordum acanthium, plantago lanceolata, poa angustifolia, reseda lutea, silene latifolia, sonchus oleraceus, ballota nigra, daucus carota, lactuca serriola, pimpinella saxifraga