anchusa officinalis, ballota nigra, achillea millefolium, apera spica-venti, artemisia vulgaris, chenopodium album, erigeron canadensis, euphorbia helioscopia, galinsoga parviflora, geranium palustre, medicago lupulina, oxalis stricta, plantago lanceolata, silene latifolia, tripleurospermum inodorum