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Botrytis (Grey Mould) in Alstroemeria

How to identify and treat botrytis (grey mould) in Alstroemeria.

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Alstroemeria care requirements

water
Moderate; water deeply when soil surface dries. Avoid waterlogging. Reduce watering in winter
soil
Well-draining, fertile soil enriched with compost or organic matter; pH 6.0–7.0 preferred
light
Full sun to part shade; requires at least 6 hours of direct sunlight daily for best flowering
symptoms

Symptoms to look for in Alstroemeria

  • fiber_manual_recordGrey fuzzy mould on leaves, flowers, or fruit
  • fiber_manual_recordBrown rotting tissue
  • fiber_manual_recordCollapsed flowers
help

Common causes in Alstroemeria

Caused by Botrytis cinerea. Thrives in cool, humid conditions with poor air circulation.

healing

How to treat botrytis (grey mould) in Alstroemeria

Remove all affected tissue. Improve air flow. Apply fungicide.

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Preventing botrytis (grey mould) in Alstroemeria

Good air circulation. Remove dead plant material promptly. Avoid overhead watering.