convolvulus arvensis, equisetum arvense, artemisia vulgaris, cirsium arvense, daucus carota, elymus repens, polygonum aviculare, tussilago farfara, achillea millefolium, chenopodium album, erigeron canadensis, hypericum perforatum, persicaria maculosa, poa trivialis, rumex acetosella, tripleurospermum inodorum