Hypericum beanii
Powdery mildew: Improve air circulation and apply a suitable fungicide if infection is severe.
Slugs and snails: Use physical barriers, iron phosphate pellets, or hand-pick at night.
Aphids: Spray off with water or treat with insecticidal soap or natural predators like ladybirds.
Root rot: Ensure well-draining soil and avoid overwatering; remove affected plants if severe.