Iris bucharica · Bulb
Bulb rot (Fusarium/Penicillium): Ensure well-drained soil and avoid waterlogging; discard infected bulbs.
Leaf spot (Cladosporium iridis): Remove affected foliage and improve air circulation around plants.
Slugs and snails: Use physical barriers like copper tape or apply iron phosphate pellets.
Vine weevil: Apply systemic insecticide drenches to soil in autumn and spring.
Powdery mildew: Spray with a fungicide or milk solution; ensure good airflow.