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 ...

The southern pine beetle (SPB) (Dendroctonus frontalis) and black turpentine beetle (BTB) (Dendroctonus terebrans) are serious pests of pines in Florida’s natural, cultivated, and landscape areas.

Many of Marin’s neighborhoods were built in the ’50s and ’60s, and developers planted Monterey pine trees for fast growing landscapes and windbreaks. As these pines become stressed from aging, drought ...