grindelia squarrosa, ambrosia artemisiifolia, artemisia absinthium, bromus japonicus, bromus tectorum, capsella bursa-pastoris, carduus acanthoides, centaurea diffusa, cichorium intybus, convolvulus arvensis, euphorbia seguieriana, lactuca tatarica, lepidium draba, lepidium ruderale, matricaria chamomilla, stachys recta, melilotus officinalis