I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
It may be that your hydrangea has suffered some root problems that are limiting flow of water and nutrients to the foliage. This could be due to dry or soggy wet soil. It may also be that frequent wetting of the foliage has promoted a bacterial infection. Avoid wetting the foliage any more than is necessary and trim out any affected areas and this should go away. I suspect it will bloom again this season if you can get it into good health again. A light fertilization is generally helpful to invigorate the plant.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
Q&A Library Searching Tips