Knockout Rose Bushes

Knockout Roses Have Leaves With Areas That Look Discolored

blackthumbTX added on August 25, 2012 | Answered

These areas are not on the leaf but in it.

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Answered on August 26, 2012

I am not sure what you mean by discolored. However, it could be that the leaves are just turning towards yellow as they are soon to fall off. It could also be a fungus that is working on them. Here are a couple links to articles that you may find useful:

These articles will give you some great information.

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