Peronospora aquilegiicola
A downy mildew affecting columbines (Aquilegia). There is a pale purplish-brown down on the leaf undersides and yellowish patches on the uppersides of the leaves. The leaf margins curl under, and flowering and growth is inhibited. The infection eventually leads to the death of the plant. It is a serious horticultural pathogen.
host 
Photograph the mildew on the host. Ensure you have noted the host-plant species in your comments
on Columbines, usually in gardens
It was first noted in the UK in 2013. See Royal Horticultural Sociey Advice Guide
sue
Bagworth
16 March 2026
sue
Bagworth
16 March 2026
x400, Cotton Blue stain
underside of leaves of garden Columbine
sue
Bagworth
16 March 2026
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Species profile
- Species group:
- fungoid
- Kingdom:
- Chromista
- Order:
- Peronosporales
- Family:
- Peronosporaceae
- Records on NatureSpot:
- 1
- First record:
- 16/03/2026 (Timms, Sue)
- Last record:
- 16/03/2026 (Timms, Sue)
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