euphorbia maculata, amaranthus albus, eragrostis minor, polygonum aviculare, amaranthus blitoides, artemisia annua, atriplex tatarica, bromus tectorum, centaurea diffusa, convolvulus arvensis, digitaria sanguinalis, erigeron canadensis, erodium cicutarium, galinsoga parviflora, hibiscus trionum, lappula squarrosa, lepidium ruderale, lepidium virginicum, lolium perenne, medicago lupulina, plantago arenaria, plantago lanceolata, poa annua, setaria pumila, sisymbrium loeselii