I’ve seen a fungus-like growth on several trees in the neighborhood. It’s a pale gray-green color with a frilly texture, and it coats much of the bark on some trunks. Can we do something about this ...

Adult spruce bark beetles in their galleries in the bark of a Norway spruce tree. The beetle in the middle is infected with the fungus Beauveria bassiana. Spruce bark is rich in phenolic compounds ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

Question: Several crape myrtles in our yard are shedding lots of bark. Is this normal? Answer: Not only are crape myrtles with shedding bark normal — but beautiful. Often under the outer layer of old ...

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 seasons are changing from fall to winter, and one of the major changes to the environment is that the deciduous trees have lost their leaves. Evergreen trees may still have green needles, but all ...

The bark of a single tree can be home to trillions of bacteria, and these microbes may have an important but neglected role in controlling greenhouse gases in Earth’s atmosphere. The total surface ...