What's with these leaves?
Hi, This is a photo of my (hardy) mum. The spots on its leaves began maybe a month ago, and seemed to coincide with my snipping them back (which is something someone told me should get done through July 4 to promote growth ?) though it makes no sense to me that these marks have anything to do with the snipping. What is going on with this plant, can you tell?
Ramsey County Minnesota