We were pushing through head-high willows along a brushy caribou trail, five days into our week-long trek across Alaska's Noatak valley, when my hiking partner, Brad Meiklejohn, startled me with a ...

Q: What's killing Colorado blue spruce trees? My parents just had one cut down in front of their house, which made me start to take notice to others dying in the area. I have noticed dying spruces ...

In recent years, most all spruce varieties have been having difficulty fighting off the fungal disease Rhizosphaera needle cast. This fungal disease causes premature death and casting of needles of ...

You would think with all the rain we had this spring your trees would look healthy. Most do, but some trees in Fort Collins are dying — and it's not the emerald ash borer killing them. There's another ...

Female (left) and male spruce cones at the Arnold Arboretum. It's a more common sight to see separate male and female cones like this. (Courtesy William "Ned" Friedman) Every spring the conifer trees ...

Pruning spruce trees at the right time and with the right techniques can keep them healthy, beautiful, and safe for decades. Late winter to early spring is the ideal season to remove dead, diseased, ...

Know of an oversized spruce or fir that could grace the state Capitol this Christmas? The state wants to hear about it. The Michigan Department of Technology, Management & Budget has once again asked ...

I am getting crushed by emails asking what to plant once beetle-killed spruce trees are removed. Impacted readers are devastated, many emotionally (and well they should be), by the loss of so many ...