By Sjw
gloucestershire,
United Kingdom 
I have 5 birch trees all quite close together however one of them has suddenly developed yellow leaves which are falling off. They are all watered at the same time and are close to a pond so do not think it is lack of water as they would all be suffering. Any suggestions thanks
9 Jun, 2016
Would be helpful to see a photo of the whole tree and one of the five trees
9 Jun, 2016