lilac bushes

Question

Our bushes are probably 30 years old, and they have always done well. This spring we had very few flowers. Now we notice the leaves on 3 of the 4 bushes starting to hang limp. We have had enough rain, so it is not drought. Do not see any insects on the leaves. Can you help us?

Answer 1

Your Lilac could be suffering from Lilac Bacterial Blight.

Here are some links with more information.

http://extension.oregonstate.edu/gardening/how-recognize-treat-and-avoid-lilac-bacterial-blight
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-bush-not-blooming.htm