Troubleshooting
Pleated Snowdrop problems — and how to fix them
Pleated Snowdrop (Galanthus plicatus) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Narcissus bulb fly
Larvae tunnel into bulbs, causing weak or absent growth. Lift and inspect bulbs in summer; discard any that are soft or hollowed. Plant at adequate depth and firm the soil around emerging growth to deter egg-laying flies.
Botrytis (grey mould)
Wet, stagnant conditions encourage grey mould on leaves and flowers. Improve drainage, thin congested clumps, and remove dead foliage promptly. Avoid overhead irrigation during flowering.
Failure to flower
Often caused by planting in too much shade, planting too shallowly (bulbs need 8–10 cm depth), or cutting foliage back before it has yellowed. Allow leaves to die back naturally every year to replenish the bulb.
Prevent pleated snowdrop problems before they start
Most pleated snowdrop issues are care-mismatch, not bad luck. Dial in the basics:
Looking for pleated snowdrop in general rather than its problems? Read the full pleated snowdrop care guide — light, water, soil and feeding.
Pleated Snowdrop problems — FAQ
Why is my pleated snowdrop narcissus bulb fly?
Larvae tunnel into bulbs, causing weak or absent growth. Lift and inspect bulbs in summer; discard any that are soft or hollowed. Plant at adequate depth and firm the soil around emerging growth to deter egg-laying flies.
Why is my pleated snowdrop botrytis (grey mould)?
Wet, stagnant conditions encourage grey mould on leaves and flowers. Improve drainage, thin congested clumps, and remove dead foliage promptly. Avoid overhead irrigation during flowering.
Why is my pleated snowdrop failure to flower?
Often caused by planting in too much shade, planting too shallowly (bulbs need 8–10 cm depth), or cutting foliage back before it has yellowed. Allow leaves to die back naturally every year to replenish the bulb.