Fagus sylvatica · Tree
Woolly beech aphid: Encourage natural predators like ladybirds; severe infestations can be treated with a systemic insecticide or horticultural oil.
Beech bark disease: Remove and burn infected wood to reduce spread; maintain tree health to improve resistance as there is no cure.
Root rot: Ensure planting sites have good drainage and avoid watering excessively during wet periods.
Late frost damage: Plant in sheltered locations away from frost pockets; protect young trees with fleece if severe frosts are forecast.
Powdery mildew: Improve air circulation around the tree and apply a fungicide if infection is severe.