For the genus 'umbilicus,' ensure a well-draining soil mix, maybe with added leaf mold or compost for organic matter. They generally prefer partial shade but can tolerate some sun if not too intense. Water requirements are moderate; maintain moist but not waterlogged conditions. Begin by loosening the soil in the planting area, incorporate organic matter, and plant at a depth where the crown sits at soil level. Water adequately post-planting and maintain consistent moisture. Note, different 'umbilicus' species could have varied specific needs; always check for particular species guidelines.