carduus acanthoides, conium maculatum, cirsium arvense, elymus repens, helminthotheca echioides, arctium lappa, artemisia vulgaris, bromus sterilis, lolium perenne, cichorium intybus, convolvulus arvensis, erigeron canadensis, glechoma hederacea, helianthus annuus, lactuca serriola, matricaria chamomilla, plantago major, rubus caesius, rumex crispus, silene latifolia, sorghum halepense, symphyotrichum salignum, urtica dioica