tussilago farfara, artemisia vulgaris, carduus acanthoides, cirsium arvense, lolium perenne, poa angustifolia, convolvulus arvensis, lathyrus tuberosus, melilotus albus, melilotus officinalis, rumex crispus, sinapis arvensis, sonchus oleraceus, trifolium repens, tripleurospermum inodorum