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Holly Bushes

Q.what causes a white rectangle spots on a holly bush

Zone 6 | beck added on June 27, 2012 | Answered

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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Certified GKH Gardening Expert
Answered on June 28, 2012

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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