The center of a tree or shrub stem (from roots to trunk, branches, and twigs) is woody, composed of xylem cells that conduct water from the roots to the upper parts of the tree. That woody section is ...

At this season, one of the most important features of trees and shrubs really shines: bark. “In winter, with the leaves gone, it’s more exposed, and we can really see it,” says Kris Bachtell, vice ...