asclepias syriaca, ambrosia artemisiifolia, elymus repens, poa angustifolia, achillea millefolium, artemisia absinthium, carduus acanthoides, centaurea diffusa, chondrilla juncea, convolvulus arvensis, delphinium consolida, erigeron canadensis, medicago falcata, melilotus albus, reseda lutea, lathyrus tuberosus, scabiosa ochroleuca, sonchus arvensis