herniaria glabra, ceratodon purpureus, digitaria ischaemum, oxalis stricta, plantago major, poa annua, poa compressa, potentilla argentea, erigeron canadensis, lepidium ruderale, lolium perenne, trifolium repens, achillea millefolium, artemisia vulgaris, capsella bursa-pastoris, matricaria discoidea