Sapwood

usgb/ˈsæpwʊd/
noun

The younger, outer part of a tree trunk, lying between the heartwood and the bark.

The sapwood of a tree is usually lighter in color than the heartwood.
Visual representation of "sapwood" - The younger, outer part of a tree trunk, lying between the heartwood and the bark.

Often appears as...

  • sapwood layer
  • sapwood color
Definition 1 of 1
Visual representation of "sapwood"
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Growth Indicator

The width of sapwood rings can indicate a tree's age and growth conditions.

Illustration for Growth Indicator
A tree with wider sapwood rings likely had favorable growing conditions.
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Color Contrast

When referring to sapwood, note the contrast between the lighter sapwood and darker heartwood.

Illustration for Color Contrast
You can see the boundary where the pale sapwood meets the dark heartwood.
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Active Function

Emphasize sapwood's role in transporting water and nutrients compared to the inactive heartwood.

Illustration for Active Function
The sapwood is crucial for the tree's nutrient transportation system.
Visual representation of the word "Sapwood"

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