Hi, Dennis: It's a little tough to tell, but obviously your tree has developed some disease, and most likely a fungus. It could be that the leaf curl was indeed more extensive and embedded than you thought. Regardless, the only thing to do is to start right away in removing anything that is diseased, and doing so very fastidiously (including anything on the ground) and thoroughly. In early fall, give what remains of the tree a very thorough application of an organic fungicide, preferably based on copper or sulfur. Do the same thing in early spring. Starting now and until next spring, remove anything, however small, that does not appear to be healthy. You can do it!
Hi, Dennis: It's a little tough to tell, but obviously your tree has developed some disease, and most likely a fungus. It could be that the leaf curl was indeed more extensive and embedded than you thought. Regardless, the only thing to do is to start right away in removing anything that is diseased, and doing so very fastidiously (including anything on the ground) and thoroughly. In early fall, give what remains of the tree a very thorough application of an organic fungicide, preferably based on copper or sulfur. Do the same thing in early spring. Starting now and until next spring, remove anything, however small, that does not appear to be healthy. You can do it!