Garden Pests and Diseases: White spots on boxwoods.. Aphids? Please Help!, 1 by rosyvermillion

rosyvermillion wrote:
We have many large boxwoods on our property that have this "dander" type of white stuff which is covering the leaves and flying through the air. Someone has suggested that they are aphids - could this be the case? The trees don't seem to be harmed at this point. We are not sure if we should try to rid the trees of this, or if we should leave them be? Is the problem aphids... or something else? We would appreciate any advice. Thank You.