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 ...

Pennsylvania's state tree is the eastern hemlock. Its scientific name is "Tsuga canadensis."The eastern hemlock was named the state tree in 1931.These trees are slow-growing and long-lived, taking ...

(Their hollow quills help them float!) In the winter, they eat the needles and bark of trees. Eastern hemlock is one of their favorites.

It’s not just hemlocks that are threatened. Beech trees that are at risk from beech bark disease and oaks that are dying from oak wilt also are part of the adopt-a -tree effort.

Clearly, bark varies considerably from species to species, and some types of trees are easily identified by the kind of bark they have. The bark of this tree is certainly easily recognized.

Parks Canada is starting to use new tools in its fight to save Kejimkujik's hemlock trees, which are under threat of being wiped out by an invasive insect. Park ecologist Matthew Smith said park ...

The Pennsylvania legislature designated the eastern hemlock the official state tree on June 22, 1931.

Invasives have largely wiped out the American chestnut and elm, caused “hell” with the beech, and are now wreaking havoc on the eastern hemlock and white ash.

Hemlock woolly adelgid meets its foe Local land trusts team up to help save the hemlock trees in the Midcoast.

Hemlock Woolly Adelgid The hemlock woolly adelgid is a tiny sap-sucking bug that can kill needles, shoots, and branches of hemlock trees, resulting in the tree’s death.

The Pennsylvania legislature designated the eastern hemlock the official state tree on June 22, 1931.This tree thrives in cool, moist sites. It occupies steep north- or east-facing slopes in ...