Native to the Mediterranean region, Olea europaea grows in sunny landscapes with sandy, loamy, or rocky ground that dries fairly quickly after rain. That background explains why the best soil for Olive tree is loose, mineral-rich, and sharply well-drained rather than dense or moisture-holding.
Its roots need air as much as moisture, so open soil structure matters. Olive tree soil should hold enough water for short-term uptake, then release excess quickly. A slightly acidic to slightly alkaline soil suits this species well and supports steady root function.