lepidium ruderale, amaranthus retroflexus, chenopodium album, erigeron canadensis, oxybasis glauca, poa pratensis, achillea millefolium, artemisia vulgaris, atriplex tatarica, bromus tectorum, capsella bursa-pastoris, crepis capillaris, hordeum murinum, lolium perenne, plantago media, poa annua, silene latifolia, sisymbrium loeselii, sonchus arvensis, sonchus oleraceus, tripleurospermum inodorum, tussilago farfara