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Andy Lopez, Contributing Columnist/Invisible Gardener
3:46 pm PDT August 25, 2014

Many readers have written to me concerning a mold problem they are having that seems to be following the whitefly infestation.
“What is sooty mold,” you say?
Sooty mold is the common name of several species of fungi that grow on honeydew secretions on plant parts and other surfaces. The fungus is dark and covers the leaves with the appearance of a layer of soot.