convolvulus arvensis, artemisia vulgaris, equisetum arvense, bromus tectorum, medicago lupulina, poa compressa, daucus carota, elymus repens, sonchus arvensis, tussilago farfara, achillea millefolium, agrostis capillaris, agrostis stolonifera, pastinaca sativa, poa palustris, dactylis glomerata, erigeron canadensis, lolium pratense, medicago sativa, poa angustifolia, poa annua, tanacetum vulgare