Originally Posted by
ASTRO
Hey scooby steve,
Would suggest removing all infected box cuttings/plants and incinerate them.
Avoid cutting the hedge as it allows the fungal spores to further infect the plant.
Contact a agricultural supplies for penoconazol fungicide for treatment . This may slow down/prevent the disease.
Copper/oil/innox sprays are not effective.
Using methylated spirits will sterilize your pruning tools to prevent transfer of disease to other plants.
Avoid over head watering and have good circulation around the hedge.
Personally I would remove the buxus hedge and replace with different type especially if grown in a humid region.
Cheers astro