Trees with smoother bark are better at repelling attacks by mountain pine beetles, which have difficulty gripping the slippery surface, according to a new study by the University of Colorado Boulder.

Autumn's fiery-colored leaves have fallen, so now let's look for more subtle beauty in trees and shrubs. Like a developing photographic image, the textures and colors of bark come into view in the ...

I know - I know, nothing sounds more boring than tree bark. But, what in the landscape can you see and enjoy outside this time of year? The snow and evergreens are beautiful together, the stark ...

The reddish gray-brown bark of the red oak tree with its darker vertical markings is one of the key features to identifying the tree in winter. (Clay Wollney) Leaves are the most useful and frequently ...

With bright colors and interesting shapes, unusual tree and shrub bark can add visual interest to winter landscapes. Many types of bark become more distinctive and sought after during winter months.

Limber pine, as seen here along the Sky High Trail, San Gorgonio Wilderness, San Bernardino Mountains, California, can have smooth bark, which discourages bark beetles. Photo courtesy of Wikimedia ...

When we think of bark on a tree, we tend to compare it to the skin of a human. The primary function of both bark and skin is to protect the material within and beneath it. In Grade 7, we learned that ...

Trees with smoother bark are better at repelling attacks by mountain pine beetles, which have difficulty gripping the slippery surface, according to a new study. Trees with smoother bark are better at ...