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Botrytis (Grey Mould) in Chrysanthemum
How to identify and treat botrytis (grey mould) in Chrysanthemum.
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Chrysanthemum care requirements
water
Keep soil consistently moist during growth and flowering; reduce watering in winter dormancy. Water at soil level to avoid wetting foliage.
soil
Well-draining, fertile soil with pH 6.0–6.5. Amend with compost or peat moss for better structure.
light
Full sun (6–8 hours daily); flowering is enhanced by shorter daylight hours in autumn.
symptoms
Symptoms to look for in Chrysanthemum
- fiber_manual_recordGrey fuzzy mould on leaves, flowers, or fruit
- fiber_manual_recordBrown rotting tissue
- fiber_manual_recordCollapsed flowers
help
Common causes in Chrysanthemum
Caused by Botrytis cinerea. Thrives in cool, humid conditions with poor air circulation.
healing
How to treat botrytis (grey mould) in Chrysanthemum
Remove all affected tissue. Improve air flow. Apply fungicide.
shield
Preventing botrytis (grey mould) in Chrysanthemum
Good air circulation. Remove dead plant material promptly. Avoid overhead watering.