There is provided A process for producing a biocompatible soil mixture from cremated ash remains, the process comprising: mixing cremated ash remains with a soil base material and a nutrient composition to produce a pre-conditioned mixture, the nutrient composition comprising at least one of paramagnetic material, soil conditioner and fertilizer; and conditioning the pre-conditioned mixture using a microbial conditioner to adjust the adverse chemical properties of the cremated ash remains biologically to produce a conditioned soil mixture being biocompatible for a legacy tree, wherein the pre-conditioned mixture comprises less than 10% of the cremated ash remains by volume.