atriplex sagittata, atriplex patula, artemisia vulgaris, ballota nigra, chenopodium album, chenopodium ficifolium, cirsium arvense, elymus repens, erigeron canadensis, lactuca serriola, persicaria lapathifolia, poa palustris, ranunculus repens, senecio vulgaris, setaria viridis, sonchus oleraceus, tripleurospermum inodorum, tussilago farfara