Ian from Waterford Mich. writes
This has been a continuous problem for as long as I've lived here, 15 years, but seems to be getting worse. I'm looking for a chemical treatment I can do myself. Thanks
We highly recommend consulting with your local Master Gardener first regarding this type of disease especially if it has progressed over the course of 15 years. Please click the link below for their contact information. If they recommend a product to you, please contact us and we will gladly assist you with your purchase and the treatment you will perform yourself. http://www.csrees.usda.gov/Extension/
Answer last updated on: 10/08/2014