An island tree expert has warned that the Isle of Man’s environment will suffer from the loss of trees due to disease.

To develop breeding programs that will produce climate-resilient, emerald ash borer-resistant trees, it will be necessary to prioritize conservation of range-wide genomic diversity, according to ...

Ash trees can grow up to 35m tall and are most easily identified when in leaf. During spring, summer and early autumn they have compound leaves with 3-6 opposite pairs of light green, oval pointed ...

A metallic green insect smaller than a penny is responsible for the destruction of 20 million ash trees in the United States and is threatening Minnesota’s ash trees. The emerald ash borer ...

Ash dieback, which was first seen in the UK in 2012, causes leaf loss and crown dieback and can lead to tree death, and ...

The disease is a fungus which infects ash trees, attacking leaves and branches, causing lesions, and eventually leading to their death. Mark Bradley, countryside manager with the National Trust ...

Credit: Katja Schulz/Creative Commons In 2009, an invasive tree pest was discovered on an ash tree in St. Paul. This past fall, 15 years later, the city cut down its last ash tree. While St ...

During the months of May and June, the caterpillars build up in large numbers and can devour every leaf on an ash tree leaving a bare, skeletonised canopy. A larvae infestation on a tree in the ...