Native to eastern Africa, Zamioculcas zamiifolia grows in warm regions where soil drains quickly and does not stay wet for long. That background explains why ZZ Plant soil should feel airy and well-drained, with a sandy or loamy structure rather than dense, heavy material.
Its thick underground rhizomes store water, so the roots are better suited to a substrate that dries gradually and still holds some organic matter. The best soil for ZZ Plant balances moisture retention with strong aeration, which helps the root zone stay oxygen-rich instead of compacted.