Has anyone yet seen this Ash disease in the Calder Valley?
The fungus responsible is commonly called Chalara fraxinea but now officially named as Hymenoscyphus fraxineus.
According to Forestry Commission mapping, most of the Upper Calder Valley is within the zone where the disease has been confirmed, as is Brighouse, Elland and parts of Halifax. The FC say this means there is a high likelihood of other Ash trees/woodland in the same area also being infected. http://www.forestry.gov.uk/chalara
If you know of any old or historic Ash trees, now is a good time to photograph them and record them.