Newly Formed Outer Layer of a Tree Trunk
This page is the CodyCross answer for the clue below from California, Group 1155, Puzzle 1 (San Francisco).
Question is: Newly Formed Outer Layer of a Tree Trunk
and the answer is: SAPWOOD
Word Meaning:
SAPWOOD — The wood just under the bark of a stem or branch; it differs from the heartwood in color and in physiologic activity (flow of sap).
Definitions from Wiktionary.