Native to Mexico, this species grows in warm forests where roots anchor into loose, airy organic debris and fast-draining pockets rather than dense ground. That habitat helps explain why Disocactus phyllanthoides prefers a substrate that stays lightly moist but never heavy or compacted.
The best soil for Cactus is loose, well-aerated, and rich enough to hold some moisture while still draining quickly. Its roots are relatively fine and benefit from oxygen around them, so a sandy, loamy texture with organic content suits steady uptake without trapping excess water.