Chinese (lacebark) Elm question

My Elm has a few yellowed leaves with dark areas located on most of the longer new-ish growth about halfway from the trunk to the tip. That is, say 40% of the distance out from the trunk is green and fine as is 40% in from the tip, but in the middel area, the leaves will fall when handled and are yellow. Of course, it has been very hot just this last week or 2 but most of the tree seems to be really in fine condition. The yellow leaves are a small fraction of the total greenery - just an odd thing. No insects that I can see so I suspect environmental.
any thoughts?
Carl
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you may have Chinese elm disease. I'm afraid you are about too lose your trees. There is no know treatment especially after the tree is infected. The disease usually takes 2 - 3 years to kill the tree. Next year the tree will only have maybe 30 % of normal leaves the next.. maybe none. I have seen thousands of elms killed by this disease. see this site. http://en.wikipedia.org/wiki/Dutch_elm_disease
JEM

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Jim Marrs wrote:

Everything I've read points to a coupla resons why that is unlikely. Dutch Elm disease seems to have not affected ANY elms in the South. and lacebarks are not affected by it anyway.
Carl
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