erigeron canadensis, tussilago farfara, elymus repens, glechoma hederacea, lactuca serriola, papaver rhoeas, cirsium arvense, convolvulus arvensis, artemisia vulgaris, bromus sterilis, descurainia sophia, equisetum arvense, galinsoga parviflora, medicago sativa, mentha arvensis, oxalis stricta, tanacetum vulgare, tripleurospermum inodorum, daucus carota, persicaria maculosa, sonchus arvensis, stachys annua