Leaves will become a dark brown colour and drop. Blossoms will die back. Fruits will become discoloured and wrinkled. A white slimy substance may excrete from infected areas. Often, the first time this disease becomes apparent is when new leaves do not appear in spring on deciduous trees and shrubs. Alternatively, woody plants may suddenly defoliate and die-back along their stems. Determining the cause as honey fungus can be tricky though. A clear indicator is the presence of strands of the fungus in the soil around affected plants. These look like thick black bootlaces. Pale brown or yellowish toadstools may appear in autumn and a gooey resin may be found oozing from the base of stems.
There is currently no chemical control commercially available for honey fungus.
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