The pollution of soil by metal(loid)s gathered research attention due to its negative environmental and health impact. Especially, research is focusing on the phytoremediation of these soils and how to improve its success. In this goal, plant selection and amendment application can be performed to ameliorate plant growth. This chapter will focus on the phytostabilization of metal(loid)-contaminated soils, with a focus on Salicaceae as potential phytostabilizor and the effects of diverse amendments, organic and inorganic, on the different components of the soil–plant continuum, i.e., soil, metal(loid)s, microorganisms, and plant, especially the physiological response of the plant roots to amendments