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Botrytis (Grey Mould) in Primula

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

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Primula care requirements

water
Keep soil consistently moist but not waterlogged; increase watering during dry spells
soil
Rich, well-draining soil amended with organic matter; prefers slightly acidic to neutral pH
light
Partial shade to dappled sunlight; avoid hot afternoon sun in warm climates
symptoms

Symptoms to look for in Primula

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

Common causes in Primula

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

healing

How to treat botrytis (grey mould) in Primula

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

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Preventing botrytis (grey mould) in Primula

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