xanthium strumarium, artemisia annua, amaranthus retroflexus, persicaria maculosa, bidens frondosa, arctium tomentosum, artemisia santonicum, bidens bipinnata, capsella bursa-pastoris, chenopodium album, erigeron annuus, erigeron canadensis, geranium divaricatum, lactuca serriola, oxybasis glauca, polygonum aviculare, urtica dioica