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what causes a white rectangle spots on a holly bush

This has killed two of my shrubs and has spread to the other four. How do I get rid of it?

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1 Comment To "what causes a white rectangle spots on a holly bush"

#1 Comment By Nikki On 06/28/2012 @ 6:45 am

It is possible that it is scale or mealybugs. I like to treat both with neem oil. It is very effective and safe. These articles will help:

If the spots are powdery in nature, then it may be powdery mildew, which neem oil will help with as well.

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