Japanese Lilac tree disease

Asked August 26, 2017, 8:36 AM EDT

Returning from vacation I found my Japanese Lilac tree is in dire straits. It is losing leaves, and an entire branch seems to have lost all leaves, in essence died. The leaves show no insect damage, but are partially discolored, partially yellow and orange. The treeis about 8years old. Is this a fungus? Should it be treated?

Anoka County Minnesota

2 Responses

We would have to see the tree or sharp photos, including close-ups of affected leaves and branches to determine what's causing the symptoms you have described.

Following is information about diseases that sometimes affect Japanese tree lilacs.
http://hyg.ipm.illinois.edu/article.php?id=166

It's too late to affect the course of events this season. If disease is confirmed, controls must be applied before or as soon as symptoms appear.

Consider asking a certified arborist to assess the tree's health onsite and recommend a course of action.

This information may be useful if you decide to hire an arborist:

How to hire a professional arborist to help care for your landscape trees
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/