lepidium ruderale, atriplex sagittata, amaranthus retroflexus, atriplex tatarica, erigeron canadensis, achillea millefolium, ballota nigra, bromus sterilis, chenopodium album, echium vulgare, lolium perenne, medicago lupulina, poa compressa, sinapis alba, sisymbrium loeselii, thlaspi arvense, trifolium repens, tussilago farfara, viola tricolor