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Holly Bushes

Q.white substance on holly leaves

Zone Valley Forge PA area | PDesana added on June 7, 2014 | Answered

Our holly shrubs have a white substance on leaves, causing them to turn brown and dead looking. Wondering cause and treatment.

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Answered on June 8, 2014

Sounds like powdery mildew. This article has information: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
To be absolutely sure, you can take some leaf samples to the local Extension Service for analysis. This link will help you locate the nearest one: https://www.gardeningknowhow.com/extension-search/

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