Native to tropical rainforests of northern South America, Fittonia albivenis grows along the forest floor, where soil stays evenly moist and rich in decayed plant matter. That habitat explains its preference for a soft, humus-rich substrate that holds moisture without becoming stagnant.
Its roots are relatively fine and shallow, so the best soil for Nerve Plant needs both moisture retention and air space. A loamy, peaty, organic-rich texture works well because it stays lightly damp while still draining freely, which supports steady root function in indoor conditions.