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 250 ...

Eastern hemlock trees like these growing along Tracy Run in Allegheny National Forest are considered "keystone species" — meaning, they play fundamental roles stabilizing the forest ecology. The U.S.

When the hills and valleys are filled with snow and the icy grip of Old Man Winter continues its reign throughout the land, there are still beautiful swaths of green to be found. Hemlocks are a ...

Round, white hemlock woolly adelgid ovisacs are found on the undersides of branches near the base of the needles. (Michigan Department of Natural Resources) The Michigan Department of Natural ...

Are you a hiker or a biker? A discoverer or outdoor lover? This is your chance to make a big impact on Tennessee's trails. Adventure Scientists is looking for volunteers to take part in its new ...

SPARTANBURG — For the eastern and Carolina hemlock, the prognosis was once dire. “I think 15 years ago, it was not clear that we would be able to save them,” said David Jenkins, a forest health ...

Cold winters are key to curbing an invasive pest that’s depleted Eastern hemlock trees for decades in Connecticut. Warm winters, fueled in part by climate change, allow these insects to spread — but a ...

Hemlock woolly adelgid is a tiny invasive insect originating in East Asia and one that has received a lot of attention since its confirmation in 2012 in Cayuga County. This aphid-like insect was first ...

LANSING, Mich. (CBS DETROIT) - There's a growing threat to hemlock trees in Michigan, but there is a way to protect them. The Michigan Department of Natural Resources (MDARD) is encouraging residents ...

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 southern ...