Beech scale / beech bark disease
What you will see
Gray-white waxy powder on the trunk and thicker branches (colonies about 0 in). The damaged bark then lets in the fungus Neonectria (Nectria) coccinea, which together cause beech bark disease.
When to look
SummerHow to protect
- Prevention
- Keep the tree vigorous (water, soil).
- By hand all yearUsually no action is needed; it is part of the insect life tied to beech. Watch a heavily infested tree for fungal canker.

















