Iris magnifica · Bulb
Soft rot: Ensure excellent drainage and avoid overwatering; remove and destroy infected plants immediately.
Slugs and snails: Use iron phosphate pellets or beer traps around the base of the plant during damp weather.
Vine weevil: Apply nematodes to the soil in autumn or use systemic insecticides if infestation is severe.
Iris leaf spot: Remove affected foliage and improve air circulation; avoid wetting leaves when watering.