My Dusky Maiden, already flowered has started to show mildew signs... I've sprayed her with fungicide, and will go on... As a measure of control I'm spaying the rest of bushes, but my question is if I have to cut the parts affected? In my case this would mean to almost hard prune the whole bush, as I can see little signs of the infection in the bottom leaves.. What do you suggest to do? to prune or not to prune?

Belel