Eurasian spruce bark beetles (Ips typographus) burrow into the bark of Norway spruce (Picea abies) trees where they mate and lay their eggs. Major outbreaks in Europe have decimated millions of ...

The dark foliage of conifer trees dominates much of our landscape. It gets to be a bit overwhelming at times, so I’m always glad when spring leaf-out brings fresh, bright greens of the deciduous tree ...

To properly manage a tree, you need to know what species it is. Plus, tree identification is a lot of fun. Knowing a tree’s species is key to understanding their proper growing conditions, how to ...

The trees in Northern California's Klamath Mountains are not keeping up with climate change. Instead, many tree species are in decline, losing the race due to climate warming and decades of fire ...

Conifers are generally better than broad-leafed trees at purifying air from pollutants. A new study shows that the best trees for air purification depend on the type of pollutant involved. Conifers ...