Join Date: Apr 2016
Location: Troy Michigan USA
A tree in log form is basically two parts, The inner diameter is heartwood, and the outer diameter is sapwood. The sapwood was generally split or sawn away as waste. Sapwood is the living part of a tree that carries nutrients to feed the tree. The heartwood id the dead part of the tree that is ridged and usually slightly darker in color. Sapwood is just that...sappy. Sapwood also attracts bugs and woodworms because it still has nutrients for them to feed on. Many times you will find sap laden boards even if it is kiln dried, due to mass production at the saw mill.
Last edited by gmercer_48083; 01-18-2020 at 10:25 AM.