amaranthus crispus, polygonum aviculare, achillea setacea, agropyron cristatum, amaranthus blitum, atriplex oblongifolia, atriplex tatarica, bromus sterilis, bromus tectorum, capsella bursa-pastoris, chenopodium vulvaria, convolvulus arvensis, digitaria sanguinalis, eragrostis minor, erodium cicutarium, lepidium draba, matricaria chamomilla, poa annua, poa bulbosa, portulaca oleracea, sisymbrium loeselii, verbena officinalis, xeranthemum annuum