polygonum aviculare, ambrosia artemisiifolia, bromus tectorum, cirsium arvense, convolvulus arvensis, cyclachaena xanthiifolia, erigeron canadensis, matricaria chamomilla, amaranthus retroflexus, arctium tomentosum, atriplex tatarica, bromus squarrosus, capsella bursa-pastoris, datura stramonium, hyoscyamus niger, lathyrus tuberosus, lepidium ruderale, sisymbrium loeselii, xeranthemum annuum, carduus acanthoides