Q: I recently purchased a home with several mature navel orange trees. One of the trees has about half the bark missing from the trunk and sort of circular looking lesions that ooze sap in the area ...

Add Yahoo as a preferred source to see more of our stories on Google. If you are looking for a tree with white bark for your garden or trying to identify a tree that you have recently seen, this page ...

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 ...

Why do trees have bark? Julien, age 6, Melbourne. This is a great question, Julien. We are so familiar with bark on trees, that most of us just take it for granted. But bark is one of the most complex ...

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 ...

Bark beetles are dark flying insects about the size of a grain of rice that leave tiny holes in the bark and branches of trees. Their very small grubs feed voraciously on the inner bark of trees that ...

The long lifespan of many trees, which could be centuries or even millennia in the case of a few species, is a source of awe and inspiration for many. The bark of trees can often tell some stories ...

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 ...

While bark beetles have been slowly infesting trees in Aspen, winter won’t offer any respite. Aspen is currently home to the Douglas-fir beetle, the spruce beetle, the mountain pine beetle, Ips ...