The wide brown trunk of an ash tree in front of my house makes a good backdrop for assessing the density of falling ...

It is also a very long-lived species — up to 500 years and more. Three-foot diameter trees are not uncommon, and these would ...

The photo is of a sycamore tree at Red-tail’s McVey Memorial Forest. A walk in the woods this time of year is different. It’s quiet and monochromatic. Other than the crunch of your shoes on frozen ...

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 ...

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 ...