Hi I hope somebody can tell me what the problem is with my 3to4 year old pear tree.The leaf ends are turning black and crinkly and at first I thought it could be fire blight but it does'nt cover the whole leaf and there is no sign of a shepherds crook at the branch ends which they say indicates fire blight.It did have a few blossoms but they just dried up and dropped.Any ideas would be greatly appreciated.The tree is in a large frost free container.

Regards Peter.