the aspen trees should be casting a shadow. But something is wrong in this stand: the treetops are nearly bare, their branches twisting starkly into the blue sky. Sarah Tharp, a wiry biologist for ...

Pat Engler-Parish, 32, is senior vice president of Aspen Tree Software Inc. in Laramie, Wyo. ”I have the best job in the world,” said Engler-Parish, who is in charge of training, customer ...

What’s yours? Q: I have about eight aspen trees that I planted about four years ago. I noticed this weekend certain branches covered in what Google tells me are mourning cloak caterpillars.

It's called Pando. The nickname is Latin for "I spread" but the tree is what's known as a Quaking Aspen clone. That means each leaf, branch and trunk are genetically identical. Some leaves may be ...

We have a problem with our aspen trees. Nearly all of them are ... That's followed by death of smaller twigs and then larger branches. If your tree does have cytospora, you're eventually going ...