This Saturday, the city will celebrate Aspen Arbor Day at Paepcke Park from 9 a.m.-noon — the 31st year of these celebrations since being designated a Tree City USA city. Festivities will include ...

Aspen leaves turn golden yellow, orange and red in the fall, and they account for 20% of the state's forests, so Coloradans can expect to see plenty of those colors as fall foliage peaks this season.

Downed tree branches and power lines kept crews busy Tuesday after a late spring snowstorm barreled through Aspen and the Colorado mountains overnight. ... Aspen Tree Services arborist Chris DePriest ...

P ando is an ancient quaking aspen tree (Populus tremuloides) with 47,000 genetically identical stems, or tree trunks, connected to a vast underground root system.Each stem is a clone of the one ...

This is our celebrated tree of fall, the quaking aspen so named for those leaves that flicker in the breeze, twinkle in the sun and stir our souls. Maybe you didn't know that about the name.

A gang of Western tent caterpillars have taken up residence in acres of aspen trees north of Durango in the San Juan National Forest. The insects construct their silken tents on aspen tree ...

However, aspen also has the ability to send up new young shoots, or suckers, off the root system of an established tree, sometimes up to 30 metres away, if the tree is large.

In 2006, there were 140,000 acres of aspen tree stands dying in Colorado. A year later, the number shot up to 338,000 acres of dead or dying aspen trees.

To carve an aspen tree — to take a blade to the trunk for the sake of your initials, for example — is to do harm. Harm to a being with a life expectancy much like our own: 100 years, if we ...

Arizona's Aspen trees are an iconic symbol of fall, drawing in thousands of hikers and photographers to the high country every year. However, research out of Northern Arizona University suggests ...