But, it is one reason that once a city staff member marks your trees, you have 20 days to remove it. This summer, “they marked all six of mine,” Nickolai said. Cordes said that elm bark ...

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 ...