grindelia squarrosa, melilotus albus, ambrosia artemisiifolia, artemisia absinthium, cirsium arvense, erigeron canadensis, lathyrus tuberosus, picris hieracioides, poa angustifolia, reseda lutea, sisymbrium loeselii, achillea millefolium, cichorium intybus, convolvulus arvensis, echium vulgare, lappula marginata, matricaria chamomilla, medicago lupulina, carduus acanthoides, odontites vulgaris