Neonectria coccinea

Beech bark disease

The bark is infected through wounds. Black tarry spots and orange-reddish fruiting bodies of the fungus are often found in the place of infection. The mycelium causes dying off of the bark and cambium cells. The tree defends itself by forming a callus, thus creating a canker tumor. Leaves above the place of infection are smaller and have symptoms of chlorosis. After girdling, the whole part above the infected place dies off. Attacked trees are necessary to be continuously removed from the stand.

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Symptom

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Black tarry spots and orange-reddish fruiting bodies of the fungus are often found in the place of infection. Leaves above the place of infection are smaller and have symptoms of chlorosis.

Tree Species: Beech, Maple

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Very harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes

Pest group: Fungi

Affected part of wood: Heartwood, Sapwood

Depth of damages: More than 5 cm depth, Under bark only, Up to 0,5 cm depth, Up to 2 cm depth, Up to 5 cm depth

The extent of damage: Whole trunk

Prevalence in Europe: Very common

Damaged products: Firewood, Fresh timber logs (water still in the sapwood), Furniture, Lumber, boards and prisms, Wooden house constructions