Sapwood

Definition

noun

The outer wood that has not yet become heartwood and is involved in conducting water.


Supplement

The sapwood consists of the living wood that primarily functions in the conduction of water upwards, i.e. from roots to other parts, such as leaves. Hence, all wood in a tree would initially be sapwood, then may form heartwood (from the center outwards) as the tree ages.


Compare: heartwood


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