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.

yates

07 April 2014 03:45 AM

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

Topics: Flowers and Ornamentals Issues: Diseases