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 the desert heats up, scorpions — including the notorious Arizona bark scorpions — become more active, leading to more frequent sightings not only outdoors but in homes and other buildings. These ...

Trees are nearly always selected for their flowers, foliage, or form. Yet, at this time of year, there is an often overlooked arboreal feature that may achieve sudden prominence in the garden. In ...

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 ...

Many of us head for mountain forests as summer heat comes on - and a new book by a Tucson author could enrich your experience in the cool, green woods. "Mountain Trees of Southern Arizona: A Field ...

Scientists are uncovering a hidden ally in the fight against climate change and air pollution: the microscopic communities living on tree bark. Far from being an inert shield, bark turns out to be a ...

Add Yahoo as a preferred source to see more of our stories on Google. As the desert heats up, scorpions — including the notorious Arizona bark scorpions — become more active, leading to more frequent ...