Heartwood

Definition

Heartwood is the wood cells nearer the center of a tree trunk.

Purpose

Heartwood serves as the central, supportive pillar of the tree, providing structural strength. It is typically more durable and resistant to decay compared to the outer layers of wood (sapwood), making it valuable for construction and woodworking.

Examples of Use

1. Furniture Making: Utilizing the strong, durable core of the tree for high-quality furniture.
2. Construction: Using heartwood for structural components in buildings and bridges.
3. Flooring: Creating durable and aesthetically pleasing hardwood floors.
4. Wood Carving: Preferred by artisans for its stability and workability.

Related Terms

• Sapwood: The outer, living layers of the tree that transport nutrients and water.
• Xylem: The tissue in vascular plants that conducts water and dissolved nutrients upward from the roots.
• Cambium: The layer of actively dividing cells between the heartwood and bark.
• Grain: The arrangement of fibers in the wood, influencing its texture and appearance.

Notes

Heartwood is typically darker in color compared to sapwood and contains various natural chemicals that help resist decay and insect attacks. The proportion of heartwood to sapwood can vary significantly between different tree species.