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Botrytis Blight in Dahlia Bishop
How to identify and treat botrytis blight in Dahlia Bishop.
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Dahlia Bishop care requirements
water
Regular watering; keep soil consistently moist during growing season. Water deeply at the base, avoiding foliage. Reduce watering as temperatures cool in autumn
soil
Well-draining, fertile soil rich in organic matter. pH 6.0–7.0 preferred. Add compost or well-rotted manure before planting
light
Full sun; requires 8+ hours of direct sunlight daily for vigorous growth and abundant flowering
symptoms
Symptoms to look for in Dahlia Bishop
- 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
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Common causes in Dahlia Bishop
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 Dahlia Bishop
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 Dahlia Bishop
Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.