lactuca serriola, tripleurospermum inodorum, tussilago farfara, artemisia vulgaris, bromus inermis, echinops sphaerocephalus, elymus repens, erigeron canadensis, medicago sativa, prunus padus, acer negundo, artemisia absinthium, bidens frondosa, cirsium arvense, cirsium vulgare, oenothera biennis, polygonum aviculare, rumex crispus, stachys palustris