At 9,000 feet, (the typical elevation in Summit County) the number of trees that thrive at this altitude are few. Of 66 mountain communities in Colorado, with the exception ...

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 ...

UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation record for the Jeffrey pine, which may now be the state's highest-altitude ...

Researchers say the growth of high-elevation bristlecone pines in the West was greater in the latter half of the 20th century than in any other 50-year period in the past 3,700 years.

A professor's casual hike in the High Sierra turned into a new elevation record for California's highest tree, the Jeffrey pine, which wasn't formerly known to grow at extreme elevations.

Like the Portland Japanese Garden, Hoyt Arboretum also sits at a higher elevation, meaning its cherry trees blossom later in the spring. The arboretum recommends visitors come see them in April.

Covington Flats’ higher elevation and greater precipitation than elsewhere in the park have helped it remain “an ideal environment for Joshua trees,” said Rockwell.

I’d guess the Redwood. Well, I’d be wrong. The most ancient trees actually live on mountaintops in harsh, dry climates. And they are called bristlecone pines. These trees have evolved lots of ...

A fire ignited in the Covington Flats area of Joshua Tree National Park on Friday afternoon and burned 175 acres and several Joshua trees in a region that experts say is critical to the species ...

One of those records starts in 1538, deep in the trunk of one of the grove’s oldest trees. Under high magnification, we can make out the cells that mark the earliest days of this tree’s life.