Some aspen trees have grayish-white bark when they are young or on higher branches, but the bark won’t peel like paper birch.

Aspen trees tend to have rough bark that ranges in color: greenish or yellowish, grey, white, or a mix. These trees are medium-sized, growing between 20 and 80 feet tall.

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.

Aspen trees are particularly vulnerable because they are linked together underground, so carving into one tree can potentially damage multiple trees. Additionally, aspen bark can photosynthesize ...

CRESTED BUTTE, Colo. — Aspen trees are the celebrities of a Colorado fall day. Think about it. People line the roads to take pictures with them. Instagram feeds from all over the state feature ...

If you journey to Fishlake National Forest in Utah, you'll be surrounded by a high-elevation behemoth. It's one of the largest life forms on the planet: a quaking aspen so colossal it has a name ...

In Scotland today, most aspen reproduction occurs by this method, creating stands of genetically identical trees connected by their shared root systems, forming a single multi-stemmed organism.

Aspen trees can thrive in a variety of conditions including sandy soil, gravel, dry grasslands and elevations from 6,500 feet to 11,500 feet. But one thing they cannot go without is abundant sunshine.