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Botrytis Blight in Broad Beans

How to identify and treat botrytis blight in Broad Beans.

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Broad Beans care requirements

water
Keep soil consistently moist but not waterlogged; water 1–2 inches per week during growing season
soil
Well-draining loamy soil with pH 6.0–7.5; add compost before planting
light
Full sun (6–8 hours daily); tolerates partial shade
symptoms

Symptoms to look for in Broad Beans

  • 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 Broad Beans

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 Broad Beans

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 Broad Beans

Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.

Botrytis Blight in Broad Beans — Symptoms & Treatment | GreenScout