ambrosia artemisiifolia, chenopodium album, persicaria maculosa, amaranthus retroflexus, atriplex tatarica, cyclachaena xanthiifolia, echinochloa crus-galli, erigeron canadensis, hordeum murinum, melilotus albus, plantago major, polygonum aviculare, rumex crispus, acer negundo, althaea officinalis, erigeron annuus, lepidium latifolium, ulmus minor