The mature ash tree (Fraxinus) often has pinnately compound ... These trees also produce clusters of catkin flowers. The most common types of elm (Ulmus) are the American, rock, and slippery ...

An ash tree commonly refers to trees of the genus Fraxinus (from Latin "ash tree") in the olive family Oleaceae. The ashes are usually medium to large trees, mostly deciduous though a few ...

Ash trees are a valuable part of our forests, where they provide habitat to all types of creatures. To help protect the tree from extinction, researchers at NC State have enlisted an old enemy of ...

the cities of Minneapolis and St. Paul have completed the removal of the last ash trees from public spaces, marking a major milestone in Minnesota's fight against the invasive beetle. Almost all ...

She's a researched ecologist with the U.S. Forest Service. All around her were big, beautiful ash trees, tall trunks with lush green canopies. These trees were thriving. Just three years later ...

There’s a tree killer on the loose in Oregon, and nobody knows how to stop it. An invasive green beetle called the emerald ash borer arrived in the Midwest from Asia, and it’s killed over 100 ...

PORTLAND Ore. (KPTV) - A bug that’s led to the destruction of hundreds of millions of trees has made its way into our area. It’s called the emerald ash borer, a type of beetle that lays eggs ...

The emerald ash borer has decimated ash trees in New York, which once comprised 7 percent of the biomass of the state’s forests. In a region of Ulster County stretching from Kingston up to ...