Ash dieback symptoms

Leaves develop dark patches in the summer.

They then wilt and discolour to black. Leaves might shed early. Dieback of the shoots and leaves is visible in the summer.

Lesions develop where branches meet the trunk. These are often diamond-shaped and dark brown.

Inner bark looks brownish-grey under the lesions.

New growth from previously dormant buds further down the trunk. This is known as epicormic growth and is a common response to stress in trees.