Increasing Redwood Burl Size for Woodworking

Understanding Redwood Burl Development

Redwood burls are woody, knobby growths that can produce highly figured wood. Their size is influenced by genetics, tree age, stress, and environmental conditions—not by a simple cultural practice.

Factors Affecting Burl Formation

• Genetics: Some trees are naturally prone to burl formation.
• Stress/injury: Physical damage, insect attacks, or fungal infections can stimulate burl growth as a response.
• Age: Older trees tend to develop larger burls.
• Environment: Stable moisture, fog, and mild temperatures (coastal redwood habitat) favor burl development.

Can You Encourage Larger Burls?

There is no reliable horticultural method to increase burl size on a living tree. Deliberate wounding risks killing the tree or introducing decay. Sustainable harvest of burl wood typically comes from salvaged logs or permitted removal from dead/downed trees.

Expert Consultation

For specialized forestry advice, contact a certified forester or a university extension specialist in redwood management.