Native to tropical West and Central Africa, Dracaena sanderiana grows in warm, humid conditions where moisture is available but roots are not trapped in stagnant soil. That background explains its preference for a loose, organic-rich substrate that stays lightly moist while still allowing air to move around the roots.
The best soil for Lucky Bamboo is loamy to slightly sandy in texture, with enough fine material to hold moisture and enough structure to drain well. Its roots are relatively fine and benefit from steady moisture, oxygen, and a mildly acidic to neutral soil environment rather than dense, compacted media.