A method for preserving the embryonic callus of the castor aralia tree has been developed using a freezing technique called vitrification. By pre-treating the callus with high sugar concentrations and using a specific vitrification solution, researchers were able to achieve a high regrowth rate of 95-100% after cryopreservation. Interestingly, a simpler method called droplet-vitrification did not show better results than the vitrification procedure. This study suggests that vitrification using cryovials may be a more practical option for preserving the callus, as it is less complex and yields similar outcomes. The cryopreserved callus was able to grow rapidly and produce healthy somatic embryos, similar to non-cryopreserved samples.