branches on spirea bush grey and curly

The end of the branches of my spirea bush are light grey and curly. I have had the bush for over 30 years and have never seen this before. What is the cause and how do I treat it?

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1 Comment To "branches on spirea bush grey and curly"

#1 Comment By Downtoearthdigs On 06/10/2015 @ 2:12 pm

It sounds like powdery mildew.
Here is a link with information on how to control it.

https://www.gardeningknowhow.com/ornamental/shrubs/spirea/growing-spirea-shrubs.htm ^[1]
https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm ^[2]

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URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/shrubs/spirea/growing-spirea-shrubs.htm: https://www.gardeningknowhow.com/ornamental/shrubs/spirea/growing-spirea-shrubs.htm

[2] https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

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