Why dark wood is at the heart of a tree trunk

Walter Reeves answers Atlanta-area lawn and garden questions, including why many tree trunks have a dark core in the middle, and what to use in a butterfly puddle.

The inside story of trees

Wood - Strength, Structure, Uses

Tree rings in Black Alder stock image. Image of tree - 16891757

Tree trunk with sawn-off branch - Stock Image - B720/0037 - Science Photo Library

Wood Rots and Decay on Trees and Shrubs

What lies beneath: Anatomy of redwoods - Save the Redwoods League

After marriage, when you and your partner buy a house together, engrave your names into a tree on your property. Wedding ceremony idea - carve your names and th…

Black Walnut Trees (U.S. National Park Service)

Why dark wood is at the heart of a tree trunk

Sapwood, Cambium Layer, Water Transport & Cellulose

File:Tree Rings and Heart Wood.JPG - Wikimedia Commons

Heartwood Tryon Naturalist Notes