Crataegus ร dippeliana ยท Shrub
Fireblight: Prune out infected wood well below the visible symptoms during dry weather, disinfecting tools between cuts.
Powdery mildew: Improve air circulation by thinning the canopy and apply a suitable fungicide if infection is severe.
Cedar-hawthorn rust: Remove fallen leaves in autumn to break the life cycle and avoid planting near junipers if possible.
Aphids: Encourage natural predators like ladybirds or use a strong jet of water to dislodge them.
Honey fungus: Improve drainage and avoid deep planting; severe cases may require removal of the plant.