Boxwood (Buxus) in a large form develops as a dense evergreen woody shrub with a compact network of finely branched stems. The foliage consists of small, smooth, oval leaves arranged oppositely along the twigs, forming a tightly layered canopy that remains green throughout the year. Branches are short and closely spaced, giving the plant a thick, uniform structure with minimal gaps between leaves.

The genus Buxus is native to parts of Europe, Asia, Africa, and the Americas, where species typically grow in woodland margins, limestone slopes, and temperate forest understories. A notable biological trait of Buxus is its extremely slow growth combined with dense wood and long-lived stems. The evergreen leaves contain waxy surfaces that help retain moisture and protect against environmental stress. In its large form, boxwood emphasizes mass, density, and persistent foliage, creating a substantial evergreen presence among shrub-like woody perennials.