Early detection and removal of infected branches may help control the
spread of the disease. Look closely at other branches near the dead limb
for early symptoms of infection such as the amber colored seepage or the
white crust. If symptoms are discovered, these branches should be removed
along with any dead limbs.
Infected branches cannot be saved and should be pruned back to the trunk.
The diseased trimmings should disposed of away from the area since they
are a primary source of spores which may cause new infections.
Trees stressed by lack of water, crowding or low fertility in the soil
tend to be more susceptible to Cytospora canker. Keeping trees vigorous
through fertilizing yearly and watering during periods of drought in the
summer may help minimize the impact of the disease.
There is no chemical control available for
Cytospora canker at