Native to parts of southern and western Europe, northwest Africa, and western Asia, Buxus sempervirens often grows in woodland settings and on limestone-influenced soils. Those conditions help explain why Boxwood soil should stay evenly moist yet drain well, with enough mineral structure to avoid becoming stagnant around the roots.
A loamy to clay-loam texture with plenty of organic matter suits its fine, fibrous root system. This kind of soil holds steady moisture and nutrients, but still needs air spaces so roots can function well. The best soil for Boxwood feels rich and moisture-retentive without staying waterlogged or overly loose.