Pansy downy mildew

Downy mildew of pansies is a disease caused by a fungus-like (Oomycete) organism. It causes pale blotches with fuzzy grey growth on the leaves, leading to the affected patches, and often the whole leaf, dying. It is particularly a problem on winter-flowering pansies in cool, wet weather.

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Pansy downy mildew

Quick facts

Common name Pansy downy mildew
Scientific name Peronospora megasperma
Plants affected Viola spp. (pansies)
Main symptoms Pale blotches and fuzzy grey growth on leaves
Caused by Fungus-like (Oomycete) organism
Timing Spring, particularly during cool, wet weather

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