amaranthus deflexus, lolium perenne, setaria viridis, erigeron canadensis, galinsoga parviflora, hordeum murinum, plantago major, poa annua, poa pratensis, calamagrostis epigejos, cirsium arvense, elymus repens, erigeron annuus, lepidium ruderale, setaria verticillata, sisymbrium loeselii