40+ Hydrangea Turning Brown And Dying. There is nothing more frustrating than to work incredibly hard cultivating new plants, caring to their every need day in and day out only to see your hydrangea leaves wilting and turning brown. There is new growth from the root that looks okay, but any new growth from existing stems turns brown/black almost immediately.
If your hydrangea blooms are turning brown too soon and quickly petering out, they likely need more water.
This article reviews the most common problems and how to treat during the growing season (the spring or the summer) if hydrangea leaves unexpectedly turn yellow and then brown and begin to fall off, a. It is probably not dying, but read on to make sure. Hydrangea leaves turning red usually happens when plants are growing in full sun and have experienced a dry spell. I got a hydrangea last summer.