Pests
Bark beetle
Identify Bark beetle: symptoms, possible causes, prevention, and practical actions for 2 affected plants. Exit holes in the bark
Editorial diagnosis
Diagnosis overview
Bark beetles mainly attack weakened woody plants. In gardens, entry holes, frass, and crown dieback are key warning signs.
In gardens, Bark beetle can occur on plants including Mulberry, Sorbus domestica. In the available profiles, it is linked mainly with Berries, Pome fruit.
Its importance depends on how quickly it spreads and whether seedlings, shoot tips, flowers, or fruit are affected. Seek expert help for valuable trees when frass or many entry holes appear.
Inspect leaf undersides, shoot tips, and the soil around the plant at different times of day. Eggs, larvae, droppings, webbing, or slime trails are often more diagnostic than one damaged leaf.
A common mistake is to treat feeding damage without checking the animal, eggs, larvae, time of activity, and affected plant parts.
At a glance
Plants
2
Category
Berries, Pome fruit
Typical signs
- Entry holes in bark
- Frass or boring dust
- Resin flow
- Dying shoots
Possible confusion
- Similar feeding damage: Always check for insects, droppings, slime, mines, holes, or residues. The damage pattern alone is often not enough.
Immediate actions
- Inspect affected parts and remove where useful
- Stabilise the plant and reduce stress
- Keep monitoring the planting
Prevention
- Encourage vigorous plants
- Monitor regularly
- Support beneficials and diversity
- Adapt care to weather and site