The Caryopteris was only just opening up its florets at the time of these photos yet the pollinators (bees & hoverflies) were going ballistic!
In the time it took me to hang my laundry they were all swarming between the Caryopteris, the New England asters, and the unopened showy sedum flowers!
Kihaku-Gato's Garden Blog (tumblr import) 