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Why do my hydrangeas look like they have grey mould on them

the leaves of my hydrangeas look like they have a grey mold on them and some are yellowing too.

Flowers and Ornamentals • Diseases

Hi Brian,

The mould that you seeing on the leaves is powdery mildew. This disease can be controlled with Yates Rose Shield, a combination insecticide fungicide product.
From your friends at Yates Gardening

Yt-team

yates

Answered: 7 Apr, 2014

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