Burl
Also called burl wood, burled, burr wood, burl veneer
A dense, swirling wood grain pattern formed by tree stress, frequently sliced into decorative veneers for fine furniture.
What Burl Is and How It Forms
A burl is a rounded, knotty outgrowth on a tree trunk, root, or branch. It forms when a tree responds to physical stress, insect activity, or fungal disruption. Instead of growing in straight lines, the tree's wood fibers twist around dormant buds, creating dense, swirling growth formations.
Visual Appearance and Construction
Burl wood is known for dramatic visual texture—clusters of tight pinhead "eyes," dark rings, and marbled waves. Because its multi-directional grain expands unevenly in solid timber, craftspeople slice burls into thin veneers bonded to stable hardwood cores. This construction gives tabletop surfaces a smooth, stable finish that wears well indoors.
Identification and Care
Burl is sometimes confused with ordinary knotty lumber, uniform grain like bird's-eye maple, or printed faux patterns. Genuine burl features non-repeating, organic patterns with visual depth beneath the lacquer, whereas printed imitations repeat identical swirl motifs. Care requires simple dusting with a soft microfiber cloth. Keep pieces clear of direct sunlight and heating vents to protect your furniture from surface checking.