Bosse

Straight grain, with knots, fine even texture. Heartwood reddish or violet-brown. Sapwood is a pale yellow color and appears throughout as streaks and stripes

Grain is usually straight, but can be irregular. Has a medium to coarse texture. Heartwood tends to be darker than temperate walnut species, with a deep chocolate brown color, sometimes with a purplish hue. Peruvian Walnut is rated as moderately durable in terms of decay resistance, though it is susceptible to insect attack. Typically easy to work provided the grain is straight and regular.

Generally straight grain, some have curly grain patterns, Heartwood is light pinkish brown when cut, then darkens with time and exposure to light. Sapwood is pale yellowish color. Common for most to have some sapwood along the outer edges. Durable and resistant to rot, however not generally used in exterior applications. Machines well. Some issues when staining.