Black Spots on Hydrangeas
I live in Fort Meade, MD(Zone 6) and I have hydrangeas that have black spots and powdery mildew on them. They have not bloomed as yet. I recently sprayed them with a fungicide and I wanted to know what type of flowers I can plant with my hydrangeas that will not be affected by this disease.
Submitted by BHGPhotoContest

All plants can be struck with fungal and bacterial diseases like the ones you're dealing with on your Hydrangeas. It's important to give your plants a lot of breathing room; plenty of air circulation can keep the powdery mildew away. Then in the fall, remove all fallen leaves and plant debris from around the base of your Hydrangeas so the pathogens won't have a cozy place to overwinter.

Answered by BHGgardenEditors