artemisia vulgaris, achillea millefolium, atriplex sagittata, carduus acanthoides, erigeron canadensis, hordeum murinum, poa annua, urtica dioica, arctium lappa, arrhenatherum elatius, atriplex patula, chenopodium suecicum, echinops sphaerocephalus, lepidium ruderale, medicago lupulina, plantago lanceolata, tripleurospermum inodorum, amaranthus retroflexus, daucus carota, heracleum sphondylium, lactuca serriola, mentha longifolia, plantago major, potentilla reptans, solanum nigrum, veronica persica