brassica napus, centaurea cyanus, artemisia vulgaris, chenopodium album, echium vulgare, achillea millefolium, epilobium parviflorum, matricaria chamomilla, papaver rhoeas, plantago lanceolata, polygonum aviculare, rumex acetosa, rumex acetosella, tanacetum vulgare, thlaspi arvense, tripleurospermum inodorum, viola arvensis