Podosphaera epilobii
A powdery mildew affecting Willowherbs (Epilobium and Chamerion angustifolium); often recorded on Great Hairy Willowherb, covering stem, shoots and leaves in thick white mycelium, often causing thickening and distorted, stunted growth. This is considered to be a gall-causer.
host/gall 
Photograph the mildew on host plant, and add host species to the comments for your record; note whether gall-causing.
Willowherbs
ref.: Redfern, M & Shirley, P. 2023. British Plant Galls. FSC
martindgrimes
Egleton NR
31 August 2016
on willowherb
martindgrimes
Egleton NR
31 August 2016
on Epilobium hirsutum
martindgrimes
Egleton NR
31 August 2016
Graham Calow
Kilby Woodland Trust - Woodland Walk
03 July 2024
downy mildew on Great Willowherb
Graham Calow
Kilby Woodland Trust - Woodland Walk
03 July 2024
downy mildew on Great Willowherb
Graham Calow
Kilby Woodland Trust - Woodland Walk
03 July 2024
downy mildew on Great Willowherb
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Species profile
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Helotiales
- Family:
- Erysiphaceae
- Records on NatureSpot:
- 18
- First record:
- 23/08/2016 (Grimes, Martin)
- Last record:
- 27/08/2024 (lemmon, roy)
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