ZonePlant

Disease on crop

fungal

Gray Mold (Botrytis) on blackberry

Botrytis cinerea

Ubiquitous fungal disease that causes fruit rot during cool wet weather, often the dominant berry disease in humid regions.

Disease
Gray Mold (Botrytis)
Pathogen type
Fungal
Crop
Blackberry
Scientific name
Botrytis cinerea

Gray Mold (Botrytis) on blackberry

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Symptoms on blackberry

  • Tan to gray fuzzy growth on ripening fruit
  • Soft watery fruit collapse
  • Spread from infected fruit to adjacent berries

IPM controls

  • Wide spacing and trellising for airflow
  • Fungicide at bloom and pre-harvest in high-pressure years
  • Prompt removal of infected fruit
  • Avoid overhead irrigation
  • Harvest at first ripeness

Other crops affected by gray mold (botrytis)

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