sonchus arvensis, cirsium vulgare, convolvulus arvensis, elymus repens, erigeron canadensis, artemisia absinthium, bromus arvensis, chenopodium album, crepis setosa, euphorbia helioscopia, lamium amplexicaule, linaria vulgaris, lolium perenne, sinapis arvensis, sonchus oleraceus, tripleurospermum inodorum