lactuca serriola, cirsium arvense, erigeron canadensis, artemisia vulgaris, carduus acanthoides, chenopodium album, convolvulus arvensis, euphorbia exigua, linaria vulgaris, lysimachia arvensis, lysimachia foemina, plantago major, rumex crispus, tripleurospermum inodorum, arctium minus, atriplex patula, chaenorhinum minus, verbascum densiflorum