Holly Bushes

My Holly Bush Has White on the Underside of the Leaves

lhouley added on June 10, 2012 | Answered

My Holly Bush has white on the underside of the leaves. I have 2 holly bushes, one has white chalky marks on the underside of the leaves, and a bit on the stems. What is this and how can I treat it? Thanks.

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Certified GKH Gardening Expert
Answered on June 11, 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 it's powdery, it is likely powdery mildew. Powdery mildew is caused by fungus that attack Holly leaves, sometimes covering them entirely with a thin white powdery coating. For more information, here is an article that you may find helpful: https://www.gardeningknowhow.com/problems/get-the-cure-for-powdery-mildew.htm

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