Rhamnus frangula · Shrub
Slugs and snails: Use physical barriers like copper tape or crushed eggshells, and hand-pick at night.
Powdery mildew: Improve air circulation and water at the base; apply a sulphur-based fungicide if severe.
Leaf spot: Remove affected leaves and avoid overhead watering to keep foliage dry.
Aphids: Encourage natural predators like ladybirds or spray with a strong jet of water.
Root rot: Ensure well-drained soil conditions and avoid overwatering during wet periods.