sisymbrium altissimum, erigeron canadensis, poa compressa, sisymbrium loeselii, descurainia sophia, achillea millefolium, arctium lappa, arenaria serpyllifolia, artemisia vulgaris, atriplex patula, atriplex sagittata, berteroa incana, brassica rapa, bromus hordeaceus, bromus sterilis, cirsium arvense, cirsium vulgare, crepis biennis, elymus repens, fallopia convolvulus, hordeum murinum, lactuca serriola, leontodon hispidus, lepidium ruderale, melilotus officinalis, phleum phleoides, poa annua, poa palustris, poa pratensis, saponaria officinalis, senecio vulgaris, silene dichotoma, sonchus oleraceus, stellaria media, thlaspi arvense, tripleurospermum inodorum, tussilago farfara