The choice of suitable (nature and quantity) amendments and the selection of varieties capable of limiting the transfert from the soil to certain crop organs are among the classic methods in phytoremediation. This present work aims to assess the effect of doses of Tithonia diversifolia and lime on the behavior and phytoavailability of copper on spinash culture. The trial was set up using the fully randomized five repeat system. The treatments consisted of 6 doses compost and 6 doses of lime compared to the unamended contaminated or amended control. The observation focused on the vegetation parameters and submitted to the analysis of variance. Before the test, the pH and the copper content of the soils were determined. Soil analysis results show that their pH is close to neutral, while the copper concentration is 3332 ppm in Tshamilemba soil, is 148 times higher than that of experimental field soils. The high copper content of soil in the Tshamilemba district did not lead to a revival of spinash growth, on the other hand an increase in the phytoaviability of copper. The reduction in copper content depends on the doses of amendments applied. This article has shown that the addition of amendments makes it possible to reduce the bioaccumulation of contaminated soil to pratice market gardening.