Ash Dieback (Chalara)
The disease was first confirmed in Britain in 2012.
The disease is from a fungus called Hymenoscyphus fraxineus.
Symptoms – I include leaf loss, crown dieback and bark lesions.
Prognosis – The disease is usually fatal, by weakening a tree to the point it becomes infected with another disease.
Experience in mainland Europe suggests that young trees a quickly killed but older, mature trees a quiet resistant.
Method of Spread – is by wind up to 10 miles, any further would be likely by the transportation of diseased trees, or movement of diseased logs/timber, however this is thought to be of low risk.