Geranium dalmaticum · Perennial
Powdery mildew: Improve air circulation and apply a fungicide or bicarbonate spray at first sign.
Slugs and snails: Use iron phosphate pellets, beer traps, or hand-pick at night to reduce populations.
Root rot: Ensure well-draining compost and avoid overwatering; remove affected plants immediately.
Aphids: Spray off with a strong jet of water or treat with insecticidal soap or natural predators.
Leaf spot: Remove infected leaves and avoid wetting foliage when watering to prevent spread.