Hydrangeas

Question

O my hydrangeas, which bloomed prolifically this year, now look like this period they all had some fungal leaf damage , too.

Should they D cut back now ,And if , How far ?

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Answer 1

Hydrangea pruning differs on the plant variety.

https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm

https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/growing-hydrangeas-hydrangea-care-guide.htm

Since it is not clear what type of fungus that you are dealing with it is difficult for me to help you determine a treatment method.

Since you treated with a fungicide, you should likely wait out the results and health of the plants during this growing season.

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm