Question: My ash tree and sycamore tree are losing leaves, which are somewhat disfigured and have blackened areas on the leaves. What should I do?

The damage is invisible at first, but it doesn’t take long for the leaves to wither, the trunks to weaken, the once-vibrant ...

Ash dieback, which was first seen in the UK in 2012, causes leaf loss and crown dieback and can lead to tree death, with fears it could wipe out up to 85% of Britain’s native ash trees, as they ...

Research suggests new generation of young ash trees showing greater resistance to ash dieback fungus than adult trees.

Deep below the surface of the ocean, bacteria and critters that feed off nutrients spouting from hydrothermal vents met with ...

The Oregon Department of Forestry is warning Oregonians about an invasive species of beetle that could emerge this summer.

Have you noticed discoloration on your maple tree leaves this year? You aren't the only one. Here's what you should know ...

The Emerald Ash Borer, an invasive species of bark beetle that was discovered in Colorado in 2013 and has been expanding through the state, has the potential to damage the Colorado landscape. And ...

As China's first UNESCO World Cultural and Natural Heritage Site listed in 1987, Taishan Mountain is home to 18,195 ancient ...

Every species of tree has unique characteristics, from its bark to its leaves, that you can use as clues to identify it—without using the internet. Beyond using this knowledge as a party trick to ...

It’s time to appreciate the iconic American beech tree; it comprises nearly 40% of our northern forests, and the species ...

Darling-58 sprouts, a transgenic American chestnut created by ESF researchers, grow in a nutrient solution. Darling 54, a ...