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Possible Duplicate:
What is the problem/disease that causes bobbly peach tree leaves?

As I was spraying my peaches, I found this ugly pink puffing on my peach leaves. What is it and how do I get rid of it?the upper surfaceunderside

J. Musser
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  • See this answer to the same question: http://gardening.stackexchange.com/questions/3092/what-is-the-problem-disease-that-causes-bobbly-peach-tree-leaves It is almost certainly peach leaf curl and is combated when the parasites migrate to or from the leaves in early spring and late autumn. – Lisa May 01 '12 at 00:34

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Looks like peach leaf curl. As far as I know it is not curable, but it is preventable (for next year) -- quoting from that UNL page:

Fortunately, peach leaf curl is one of the easiest fruit diseases to control. In most years, leaf curl can be effectively prevented with a single application of an appropriate fungicide, including lime sulfur, chlorothalonil, Bordeaux mixture, or a copper fungicide.

You should spray in late winter.

bstpierre
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