Hyacinthoides non-scripta · Bulb
Slugs and snails: Use beer traps, copper tape barriers, or iron phosphate-based pellets to protect young shoots.
Vine weevil: Apply nematodes (Steinernema carpocapsae) to moist soil in autumn or use systemic insecticides.
Bulb rot: Ensure well-drained soil and avoid waterlogging; remove and discard infected bulbs immediately.
Powdery mildew: Improve air circulation around clumps and apply a fungicide if infection is severe.
Overcrowding: Dig up and divide congested clumps in summer after foliage has died down.