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Botrytis Blight in Geranium Zonal
How to identify and treat botrytis blight in Geranium Zonal.
potted_plant
Geranium Zonal care requirements
water
Water moderately; allow soil to dry between waterings; overwatering is the primary cause of decline
soil
Well-draining potting soil or garden soil; tolerates poor soil; pH 6.0–7.0
light
Full sun (6–8 hours daily); bright light indoors; insufficient light causes leggy growth
symptoms
Symptoms to look for in Geranium Zonal
- fiber_manual_recordFuzzy grey-brown mould on flowers, leaves, or stems
- fiber_manual_recordWater-soaked spots that turn brown and mushy
- fiber_manual_recordBlighted flower buds that fail to open
help
Common causes in Geranium Zonal
Caused by the fungus Botrytis cinerea (grey mould), which thrives in cool, humid conditions with poor air circulation, often spreading rapidly on damaged or ageing plant tissue.
healing
How to treat botrytis blight in Geranium Zonal
Remove and destroy all affected plant material immediately, improve airflow around the plant, and apply a fungicide labelled for Botrytis if the infection is spreading.
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Preventing botrytis blight in Geranium Zonal
Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.