Hi Team, We have a walnut tree in the middle of our small orchard that is 35 years old. Last year we noticed that the leaves on the tree were smaller than usual and most of the nuts wound up sun burnt and unusable. This year the tree has forgotten to shoot, no leaves, no 'flowers' nothing. Some of the tips of the little branches are still pliable but no movement. I can't see any obvious problemswith the tree and everyhing else around it is doing just fine. Any ideas?