Good afternoon and thank you for your question.  It is possible that what you are seeing is frost damage, some plants are quite sensitive.  I am in the Columbus area and have had some frost damage to some of my hydrangeas, lilacs and other ornamentals.  It is also possible that it is herbicide injury. Herbicide drift typically happens if volatile products where applied on a very hot and/or windy day.  Do you know what they applied?  Unfortunately, we are not equipped to come out to do an inspection.  I would encourage you to submit a sample to the Plant and Pest Diagnostic Clinic where an expert is better equipped to accurately diagnose the damage you are seeing.  Here is information on submitting a sample:  https://ppdc.osu.edu/submit-sample

I wish you all the best. 

You're very welcome.