chenopodium ficifolium, amaranthus retroflexus, chenopodium album, ballota nigra, erigeron canadensis, poa pratensis, tripleurospermum inodorum, artemisia vulgaris, atriplex patula, capsella bursa-pastoris, convolvulus arvensis, elymus repens, lactuca serriola, plantago major, poa annua, sinapis arvensis, sonchus oleraceus, tussilago farfara