Dwarf Alberta spruce (Picea glaucaConica) is a cultivar of white spruce. Growing just two to four inches per year, dwarf Alberta spruce can take 25 to 30 years to reach 10 or 12 feet in height.

As the Arctic rapidly warms, sea ice levels are declining, leading to more evaporation from the open ocean and more snow throughout much of northwestern Alaska. The team could quantify the white ...

Our field study focuses on 700 white spruce trees spread along 1,500 miles of mountains between Canada and the Chukchi Sea. Russell, Colin, and I have each been to nearly all 700 trees to set up ...

White spruce trees dot the tundra in the Brooks Range. These trees are better able to survive harsh conditions due to heavy winter snowfall, a result of Arctic sea ice loss. (Photo courtesy Colin ...

But Dial is finding young white spruce growing from seeds that must have traveled 5 to 7 miles—and over mountains, no less. The population isn’t so much moving north as it is leaping.

The aforementioned champion white spruce in Koochiching County is the tallest in Minnesota at 126 feet tall. There's also an eastern white pine in Aitkin County near Glen that measures 121 feet tall.

It was a tree disease known as spruce needle rust, which infects only the current year’s needles of white, black and Sitka spruce trees. [River Piracy strikes the Yukon] The orange powder is ...