Cut of a heartwood tree trunk.

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

Vladislav KUZNETSOV, Professor (Full), PhD, Saint Petersburg State University, Saint Petersburg, SPBU, Department of Geomorphology

How Tree Trunks Are Cut to Produce Wood With Different Appearances and Uses

Tree Felling & Dismantling — Hampshire Heartwood Tree Surgeons - We Tame Trees

Was cutting down this tree, pretty amazing to see its heartwood is a love- heart-wood : r/mildlyinteresting

What's the Difference Between Heartwood and Sapwood? - (Which One to Use for My Project) - Castle Bespoke Flooring

12.2: Secondary Growth - Biology LibreTexts

How Wood is Formed in Trees

Vasily GRIGORIEV, Engineer-researcher, Magister, Saint Petersburg State University, Saint Petersburg, SPBU, Institute of Earth Sciences

Cut of a heartwood tree trunk.

Heart Rot: The bridge between ecology and horticulture

How to Do a Scratch Test on Trees & Plants - Stark Bro's