These lilacs were planted in mid June this year. The leaves started to curl and got black spots on them. Now leaves are dying and tips of branches are getting black. Weather has been pretty much dry and hot since planting. I was watering them 2-3 times a week initially. I thought I was over watering them so cut back to a 7-10 day schedule. Also tried spraying them with a water,/baking soda solution. Seems to be getting worse. Suggestions?
Warren County Ohio
Thank you for your questions. You’ll need advice from your county Ohio State Extension to get staff involvement in diagnosing these problems. Please contact your Extension office here: https://warren.osu.edu/home Good luck!