melilotus albus, achillea millefolium, elymus repens, tripleurospermum inodorum, artemisia campestris, artemisia vulgaris, ballota nigra, bromus tectorum, capsella bursa-pastoris, carduus acanthoides, cichorium intybus, cirsium arvense, echium vulgare, erigeron canadensis, lactuca serriola, lolium perenne, medicago lupulina, plantago lanceolata, poa compressa, poa pratensis, trifolium repens, tussilago farfara