erigeron canadensis, tripleurospermum inodorum, artemisia vulgaris, bidens frondosa, carduus crispus, echinochloa crus-galli, erysimum marschallianum, galium rivale, helianthus tuberosus, lactuca serriola, persicaria hydropiper, persicaria mitis, poa pratensis, silene latifolia, urtica dioica, fallopia dumetorum, poa palustris, silene dioica, campanula patula, epilobium ciliatum, tanacetum vulgare