treating cytospora disease in spruce

Asked January 16, 2019, 3:52 PM EST

I supposedly have this fungus attacking my spruce. We water, but do not fertilize this 35 year-old tree. What do you recommend? Thanks!

Washington County Minnesota cytospora on spruce cytospora canker

1 Response

Prompt pruning of affected branches is the best way to slow the progression of this disease. Fungicides are ineffective and are not recommended.
Providing water when needed is beneficial.

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