what causes brown spots on my hydrangea plant leaves

Question

In the last month brown spots have shown up on the leaves. What is the cause and treatment?

Answer 1

Hopefully the information in these articles will help: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-leaves-turn-purple.htm

http://blog.pennlive.com/gardening/2012/05/leaf_disease_on_hydrangeas.html