Older lilac bush flowers are turning black and crumble when touched. The leaves are fine Just the flower is doing that. Has never done this before.
Hancock County Indiana
Thank you for your question. We are unable to identify plant problems without clear photos. I would suggest you take some, and visit your county Extension office, where staff are more familiar with plant diseases. Here is their webpage: https://hancockcoingov.org/hancock-county-government-departments/hancock-county-indiana-purdue-extension-office