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Botrytis Blight in Zantedeschia
How to identify and treat botrytis blight in Zantedeschia.
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Zantedeschia care requirements
water
Keep consistently moist; thrives in boggy soil or shallow water; reduce watering in dormancy
soil
Rich, organic, moisture-retentive soil; tolerates wet conditions better than most plants
light
Full sun to part shade; requires at least 6 hours of sunlight for optimal flowering
symptoms
Symptoms to look for in Zantedeschia
- 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 Zantedeschia
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.
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How to treat botrytis blight in Zantedeschia
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 Zantedeschia
Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.