The growths of Brassica juncea (L.) Czern and Bidens alba (L.) DC. var radiata were different in each composition. It was observed that Brassica juncea (L.) Czern and Bidens alba (L.) DC. var radiata grew well in experimental pots amended with 50, 100 and 150 mg Cu/kg, respectively. For both species, small and chlorosis in stem and leaves were found in the pots amended with 200 mg Cu/kg.