We’ve had a number of mysterious pine tree species in this column, and here is another. There’s always a new pine species to learn about: after all, there are about 100 species worldwide.

The oldest tree species is the Great Basin bristlecone pine, with many trees dating back around 4,000 years. The oldest tree is named Methuselah and it dates back nearly 5,000 years.

White pine blister rust, a non-native invasive fungus that slowly kills the tree, has wiped out more than 325 million whitebark pine trees and remain the primary threat to the species, according ...

The whitebark pine is a hardy tree that grows in an area stretching from British Columbia, Canada south to parts of California and east to Montana. It's a keystone species in its subalpine and ...

We’ve had a number of mysterious pine tree species in this column, and here is another. There’s always a new pine species to learn about; after all, there are about 100 species worldwide.

Know how to ID a red pine tree. Red pines have craggy, reddish bark and 4- to-6-inch needles that grow in bundles of two. Scotch and Austrian pine cones, which have some similarities, will not be ...

We’ve had a number of mysterious pine tree species in this column, and here is another. There’s always a new pine species to learn about: after all, there are about 100 species worldwide.