Ash dieback is a severe disease that has substantially threatened European ash populations, particularly Fraxinus excelsior. The disease is caused by the invasive ascomycete fungus Hymenoscyphus ...

An "emerging challenge" is spreading across the UK which will likely cost more than £15bn, according to a Knowsley Council report. The enormous cost associated with Ash Dieback disease was laid bare ...

It’s been rooted on one of Scotland’s best-known streets for 170 years, weathering storms and eyewitness to a timespan that saw the birth of ...

… but our independent journalism isn’t free to produce. Help us keep it this way with a tax-deductible donation today. In 2009, an invasive tree pest was discovered on an ash tree in St. Paul. This ...