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Geranium pratense var. albiflorum - Powdery mildew?

Hi there
I planted three Plkenum Album, in a partially shaded border, well drained, well watered and they look like this. Any ideas why and what i can do?


  • LynLyn Posts: 23,060
    I just cut all the foliage off and they grow fresh from the base. 
    Gardening on the wild, windy west side of Dartmoor. 

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