asclepias syriaca, achillea millefolium, carduus acanthoides, centaurea diffusa, elymus repens, melilotus albus, artemisia absinthium, bromus tectorum, chondrilla juncea, cichorium intybus, crepis tectorum, erigeron canadensis, medicago falcata, poa angustifolia, reseda lutea, scabiosa ochroleuca, artemisia santonicum