Japanese Holly Bushes
Q.

Japanese Hollies have a white powdery substance

Zone ? North Carolina | Anonymous added on July 25, 2016 | Answered

My 10 yr old Japanese hollies have a white powdery substance on the stems and branches. The leaves are unaffected. One of the hollies is especially bad looking where the leaves and branches are brown and dead. I did not notice the fungus type stuff as you have to look directly into the bush and spread the branches to see it. I never would have noticed anything until the one plant began to turn brown in sections.

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on July 26, 2016

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/nonorganic/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/problems/powdery-mildew-homemade-and-organic-remedies.htm

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