erigeron canadensis, senecio viscosus, artemisia vulgaris, lactuca serriola, tripleurospermum inodorum, sonchus oleraceus, chenopodium album, cirsium arvense, lepidium ruderale, lolium perenne, plantago lanceolata, plantago major, sisymbrium officinale, arctium minus, carduus acanthoides, matricaria discoidea, melilotus albus, sisymbrium altissimum, trifolium repens