Pine trees are one of the most common coniferous species in North America. Learn how to identify the types found in the United States and Canada.

Consumers have a surprisingly wide range of tree species to choose from at Christmas. This guide presents the pros and cons of 15 kinds of Christmas trees, from Douglas Firs to Virginia Pines.

About 40 species of pine occur in North America (out of over 100 worldwide). Most of these produce seeds with well-developed, flat wings; they are adapted for wind-dispersal when the cones open ...

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.

Mountain pine beetle epidemics are cyclical in the Black Hills, and the most recent epidemic killed millions of trees on about 750 square miles of affected land from 1996 to 2016.

Lines of aspens shimmer between pine trees in South Lake Tahoe. By Marin Independent Journal. PUBLISHED: January 10, 2020 at 1:13 PM PST. There are five species of pine that grow in Marin, John ...

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 ...

Diplodia tip blight is a fungus disease that kills the new growth on susceptible species of pine trees. The obvious sign of diplodia tip blight is seen in spring, when new needles at the tips of ...

Presence of blight confirmed in state’s pine trees. July 23, 2023 at 2:28 a.m. by Nick Kordsmeier Special to The Commercial ...