Native to southern Mexico and Central America, Monstera deliciosa grows in warm, humid tropical forests, often rooting into loose layers of leaf litter and organic material. That background explains why it prefers soil that stays lightly moist but still drains well.
Its roots need both steady moisture and air around them, so the best soil for Monstera feels rich and loamy rather than dense or soggy. A slightly acidic to near-neutral root zone suits nutrient uptake, while organic matter helps hold moisture without cutting off oxygen.