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.

With so many different types of Christmas trees, you'll probably want to check out a tree farm to see what catches your eye the most. In the meantime, ... Scotch pine and more!

Coniferous trees can produce two types of leaves with a variety of slight alterations that further ... Three of the most common conifers that grow in North America are pine, fir, and spruce trees.

There are two types of pesticides for pine beetles -- bark surface sprays and systemic pesticides. Both can protect healthy ...

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.

From wild boars to kudzu, Kentucky is home to many invasive species. ... Cutting trees and shrubs at the base may cause them to regenerate, so it's better to uproot them.

According to the U.S. Fish and Wildlife Service, more than 325 million whitebark pine trees have been wiped out by this disease, and it remains the leading threat to the species. Whitebark pine ...

From wild boars to kudzu, Kentucky is home to many invasive species. ... Cutting trees and shrubs at the base may cause them to regenerate, so it's better to uproot them.