Hello, I've uploaded two photos, hopefully sufficient evidence for an ID. These resulting black, wilted buds are on plants that look beautiful and healthy. The same thing has happened on roses nearby, and roses nowhere near. Also on one columbine, and one clematis that are elsewhere in the garden, and near each other, but no evidence on the multitude of other plants mixed in with them. Any ideas? I live and garden in south MInneapolis. Thank you for your time and trouble. I look forward to hearing from you. Maggie Dolan