Soils contaminated with metals pose a major environmental and human health problem, which is still in need of an effective and affordable technological solution. The phytoremediation is a cost-effective -green- technology based on the use of metal-accumulating plants to remove toxic metals. Plant growth and lead accumulation of accumulating and non-accumulating ecotypes of Sedum alfredii Hance were studied with hydroponic, pot and field experiments. To elucidate the characteristics of Pb tolerance and accum...