cirsium arvense, lathyrus tuberosus, matricaria chamomilla, ambrosia artemisiifolia, capsella bursa-pastoris, convolvulus arvensis, cyclachaena xanthiifolia, erigeron canadensis, galium aparine, lepidium ruderale, medicago falcata, senecio vernalis, amaranthus retroflexus, artemisia santonicum, atriplex tatarica, bromus squarrosus, bromus tectorum, carduus acanthoides, sisymbrium loeselii, stachys recta, xeranthemum annuum