On one of my lilac trees, the leaves are curling and looks like it needs watering; but I watered it when I saw that it was doing this, but that did not help. What can I do to get it looking healthy again?
Certified GKH Gardening Expert
There are a lot of things that could be affecting the lilac: borers, canker and root rot to name a few. They are generally tough plants and come through just about any adversity. I would try cutting it back. If it survives, it will not bloom next year, but blooms should return the following year.