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Why are my hydrangea leaves turning brown? 3 common causes and how to quickly rectify them
Jul 10, 2025

These garden showstoppers can start to look a little worse for wear if you don't make the following adjustments

I recently added a hydrangea to my yard, as these popular cottage garden plants never fail to wow with their showy, spherical and cone-shaped florals. Something I'm keen to avoid, however, are the leaves turning brown, a common issue hydrangea growers experience. If this has happened to you, don't fret. You may just need to make a simple adjustment to prevent the issue becoming worse.
Growing hydrangeas is fairly low-maintenance once these shrubs are established. But, some small errors can cause a wide range of problems, including flowers wilting and hydrangea leaves turning brown. It could be anything from a watering issue to a pest and disease problem, but the good news they're all fixable with a few changes.
These common problems are likely also causing your hydrangea flowers to turn brown or may potentially be turning your hydrangea leaves yellow. Here, we take a closer look at some common causes behind hydrangea leaves turning brown and what can be done to fix the problem.

3 reasons your hydrangea leaves are turning brown

These are just some of the most common causes behind hydrangea leaves turning brown, it's worth doing a bigger investigation into your hydrangea's growing environment if the following causes and solutions aren't applicable.
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