Crocus corsicus · Bulb
Vine weevil: Check pots for grubs before planting and use biological nematodes or chemical controls in autumn.
Corm rot: Ensure sharp drainage and keep completely dry during summer dormancy to prevent fungal attack.
Slugs and snails: Use slug pellets, beer traps, or hand-pick at night to protect tender new growth.
Powdery mildew: Improve air circulation and apply a fungicide if severe, though often cosmetic on crocuses.
Bird damage: Plant under low shrubs or use netting to protect emerging flowers and shallow-planted corms.