A team of American scientists sought to learn whether an American team of burrowing rodents could help restore Mount St Helens after her 1980 eruption.

Nasty root rot threatens the Fraser fir, a beloved Christmas tree. North Carolina scientists are trying to save the iconic species.

Do not cut Ponderosa pine or Douglas fir trees. Please review the San Juan National ... Local forest health experts identify areas that benefit from thinning trees that tend to be the perfect size for ...

Native tree species including chinkapin oaks, western hemlock, western red cedar and grand fir intermixed with the dominant ...

Sustainably harvested white and red “silver tipped” fir trees from Northern California will be available for pickup on Sunday, December ...

What does it take to bring a massive tree to Pioneer Courthouse Square to celebrate the holidays? Two flatbed tractor-trailer ...

A UC Berkeley-led citizen science project has discovered at least four outbreaks of a new, potentially more aggressive form ...