Japanese lilac tree diseases - Ask Extension
See attached pictures of my Japanese lilac tree. what is wrong? how too treat? This problem covers most all the tree.
Knowledgebase
Japanese lilac tree diseases #755734
Asked June 12, 2021, 1:49 PM EDT
See attached pictures of my Japanese lilac tree. what is wrong? how too treat? This problem covers most all the tree.
Scott County Minnesota
Expert Response
Thanks for the question.
You have recently had some very high temperatures with drying winds. Many plants, including lilacs, will experience dehydration in the leaves (this is why they are curling) and leaf discoloration. In the vast majority of instances no harm is done to the plant and it will recover. In the meantime, be sure to water on a regular and frequent basis. Do your watering in the early morning if possible. If you wish you could remove at this time the blackened and discolored leaves. The following will describe this sun scorch in further detail:
Good Luck