sapwood
The younger outer wood beneath the bark that carries water and dissolved minerals through a tree.
Sapwood in a young black walnut trunk cross-section (Juglans nigra)
All languages
- English
- sapwood
- Norwegian
- yteved
- Japanese
- 辺材 — へんざい — henzai
- Korean
- 변재 — byeonjae
- Spanish
- albura
- French
- aubier
- German
- Splintholz
Illustrations are AI-generated and translations are undergoing language review.
Reference sources
- US Forest Products Laboratory Wood Handbook — sapwood is the active water-conducting, lighter-colored wood adjacent to bark
- USDA Forest Service technology-transfer sheet — black walnut sapwood is nearly white and contrasts with chocolate-brown heartwood
- University of Illinois Extension — eastern black walnut commonly has ten to twenty annual growth rings in its sapwood