treating Cytospora canker

Asked November 6, 2017, 8:42 AM EST

I have a blue spruce in my front lawn and have dead lower limbs and about 86 % of tree is still green. What is the correct way to remove the dead limbs and when? Could I fertilize now are or when?

Baltimore County Maryland disease issues blue spruce cytospora canker tree

1 Response

Wait for late winter or dry weather before pruning out dead and dying branches close to the trunk. Don’t prune in wet weather because the fungus can easily infect pruning cuts. Destroy pruned out branches.
If the tree is located in the lawn area and the lawn is being fertilized no fertilizer is necessary. Fertilize only according to a soil test. Soil test results give pH and nutrient deficiencies. http://extension.umd.edu/hgic/soils/soil-testing

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