Garden Pests and Diseases: white fuzz/cottony substance on coneflower, 1 by coleup

coleup wrote:
Your pics look like the flatid leafhopper nympths that are on many of the plants, trees and shrubs in my yard. They can jump 12 to 18 inches! as well as move about. They turn into lovely little white or pale green adults that gather together and 'line up' on a stem or twig. They can suck enough sap to damage some leaves and stems especially new or tender growth. They leave behind their white waxy secretions as they move on (like your pic #2)

http://growingsmallfarms.ces.ncsu.edu/2014/07/what-is-the-wh...