Primula × loiseleurii · Perennial
Primula rust (Puccinia primulae): Remove and destroy infected leaves immediately to prevent spread; avoid overhead watering.
Leaf spot: Improve air circulation and remove affected leaves; ensure good garden hygiene by clearing debris.
Slugs and snails: Use physical barriers like copper tape or eggshells, and hand-pick pests at night.
Powdery mildew: Ensure good air circulation around plants and avoid wetting foliage when watering.
Root rot: Plant in well-draining soil and avoid overwatering, especially during winter dormancy.