Geranium × lindavicum · Perennial
Vine weevil: Apply a systemic insecticide drench or use biological nematodes to control larvae.
Slugs and snails: Use iron phosphate pellets or copper tape barriers to deter feeding.
Powdery mildew: Improve air circulation and treat with a sulphur-based fungicide if severe.
Geranium sawfly: Hand-pick visible larvae or apply an insecticidal soap spray.
Root rot: Ensure sharp drainage and avoid overwatering, especially in heavy soils.