Lilac Tree Disease - Ask Extension
HiI run a community garden in Brooklyn. Our lilac tree seems to have a disease that we cannot identify. Older branches are turning a dark black and ha...
Knowledgebase
Lilac Tree Disease #599876
Asked September 29, 2019, 11:08 AM EDT
Hi
I run a community garden in Brooklyn. Our lilac tree seems to have a disease that we cannot identify. Older branches are turning a dark black and have what looks like a fungus growing from cracks in the bark. All the leaves on the branch die and fall off. I am attaching photos. Is there anything we can do about this?
Thanks
I run a community garden in Brooklyn. Our lilac tree seems to have a disease that we cannot identify. Older branches are turning a dark black and have what looks like a fungus growing from cracks in the bark. All the leaves on the branch die and fall off. I am attaching photos. Is there anything we can do about this?
Thanks
Kings County New York
Expert Response
Hello,
I think the white material coming out of the cracks is frass from a lilac borer. Remove some of the debris to see if their is a hole underneath. See the extension fact sheet at the link.
Regards,
Carol Quish
UConn
