Gardening Questions Disease of walnut tree

Imgp4161
Chrispook

Disease of walnut tree

Asked by Chrispook on 11 Feb, 2008

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Our walnut tree developed a conditiow with yellow spots all over the leaves last Summer. Will it harm the tree? What is it? Do we need to treat the tree to prevent a recurrence?

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maple

Maple

11 Feb, 2008

 

I think your tree has Downy Spot - yellow spots on the upper leaf surface and white powdery mildew on the underside ?
If it is this then there is no need to do anything. Apart from looking unsightly it will not harm your crop.

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