Hypericum × dummeri · Shrub
Slugs and snails: Use physical barriers like copper tape or apply iron phosphate-based pellets.
Vine weevil: Apply systemic insecticides to the soil in autumn to target larvae.
Powdery mildew: Improve air circulation and spray with a fungicide if infection is severe.
Aphids: Squash by hand or use a strong jet of water to dislodge them.
Root rot: Ensure well-drained soil and avoid overwatering, especially in winter.