How can I stop leaf spot on my photinia hedge?

Eleanor, Northern Ireland

A ANNE SAYS Photinia leaf spot is considered a symptom of stress, triggered by cold winter winds, waterlogging (especially if they are planted on the flat), drought or all three. Perk plants up with a tree and shrub fertiliser in spring and mulch with soil conditioner when the soil is moist. Damaged leaves eventually drop and hedge pruning will encourage fresh new growth.

Look after the soil around photinias to keep leaves healthy