Cornus · Shrub
Cornus anthracnose: Rake up and destroy fallen leaves to reduce inoculum and choose resistant European species where possible.
Powdery mildew: Ensure good air circulation by pruning and water at the base to keep foliage dry during humid weather.
Slugs and snails: Use physical barriers like copper tape or apply iron phosphate-based pellets around the base of the plant.
Aphids: Encourage natural predators like ladybirds or blast off infestations with a strong jet of water.
Vine weevil: Apply systemic insecticide granules to the compost or use biological controls like nematodes.