sisymbrium loeselii, capsella bursa-pastoris, hordeum murinum, tripleurospermum inodorum, achillea millefolium, artemisia vulgaris, atriplex patula, bromus sterilis, descurainia sophia, erigeron canadensis, erodium cicutarium, fallopia convolvulus, lactuca serriola, lepidium draba, lepidium ruderale, senecio vulgaris, poa compressa