chenopodium album, atriplex patula, amaranthus powellii, amaranthus retroflexus, chenopodium vulvaria, echinochloa crus-galli, galinsoga quadriradiata, matricaria discoidea, medicago lupulina, poa annua, chenopodium ficifolium, phragmites australis, sonchus oleraceus, urtica dioica