Winterthur plans to keep an eye on this tree next year. Whitefly on azalea - azaleas in full sun were covered with white fly earlier in the season. Some white flies still exist and fly off the plant if a branch is shaken. But another key diagnostic feature is the sooty mold on leaves that grows on the honeydew left by the whiteflies. Cottony taxus scale - has caused a lot of damage on an old yew.
Foliage is covered with settled scales.
The only treatment time for effective control is when the crawlers are mobile. This scale must be monitored for each site because crawler emergence can vary widely between locations. Cooperative Extension Education in Agriculture and Home Economics, University of Delaware, Delaware State University and the United States Department of Agriculture cooperating. John C. Nye, Dean and Director. Distributed in furtherance of Acts of Congress of May 8 and June 30, 1914.