asclepias syriaca, melilotus officinalis, achillea collina, anthoxanthum odoratum, artemisia vulgaris, chenopodium album, cirsium arvense, convolvulus arvensis, elymus repens, euphorbia cyparissias, medicago falcata, melilotus albus, oenothera biennis, poa annua, poa pratensis, polygonum aviculare, ranunculus repens, urtica dioica