Finish pruning spring-blooming shrubs so that they can re-grow and set buds for next year.
Powdery mildew is starting to show up. This is one of the diseases that doesn't need wet leaves to start up; it appears when humidity is high. We also see more of it in shade, where it likes that more moderate temperature. You can control it by selecting plants that are resistant, or applying a fungicide (like neem oil) in very early morning or evening hours (not in the heat of day).