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.

Why is the wood at centre of a tree trunk darker?

United forever: heart with initials P+S in tree bark - a Royalty Free Stock Photo from Photocase

City Trees - November/December 2023

What Is the Difference Between Sapwood and…, Autumn 2007, Articles

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

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

Damaged beech trunk, partial view with incised name PAUL, monochrome - a Royalty Free Stock Photo from Photocase

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Why is the wood at centre of a tree trunk darker?

Tree Decay: Signs, Prevention and Treatment - Independent Tree

Is this walnut tree healthy or not? (Is the dark spot inside heartwood, or something else?) : r/wood

Heart Shape On A Tree Trunk Stock Photo - Download Image Now - 2017, Black Color, Brown - iStock

Close-up of the sawn end of the branch of an unidentified tree, showing the heart wood (dark, centre), sap wood (light) and bark (rusty brown). Sap wo Stock Photo - Alamy