Help with an ailing laburnum
My friend has been asking me for some advice. She has a laburnum which is ailing dreadfully, after a good spring. Photos attached. There doesn't seem to be any sign of pests, or fungus, and if she snaps a twig is it still green inside. I suspect it is suffering as a result of last year's drought, but I would welcome any other thoughts. Also I dont know what to advise her to do if it is in severe stress. Can anyone help?