Sue Sanderson – our horticulturist expert
Sue Says
Powdery Mildew is quite prevalent at this time of year and affects a wide range of plants. It is often associated with humid conditions and the plant becoming dry at the roots. It can be controlled by spraying with a fungicide. There are lots available, just check the manufacturers label to make sure you choose one that is suitable for clearing powdery mildew on ornamentals.
Prune out and burn any infected plant material to reduce the spread of spores, and try to prevent the plants becoming dry at the roots by ensuring that they are adequately watered. You could also apply a mulch in spring to help conserve moisture in the soil throughout next summer.
