Saturday, July 25, 2015

Armillaria Root Rot in Pin Oak

I recently examined a Pin Oak 45 feet high and 13 inches DBH. This tree had wilted misshapen leaves with some leaves on the ends of the branches that were over sized and misshapen.






































The bark had small off white mushrooms (2mm)  in patches coming from cracks in the bark.










































The soil was very moist with moss covering it. There were small yellow/ gold mushrooms growing from the soil at the base of the tree.

Diagnosis- Early stages of  Armillaria Root Rot

Treatment - Aeration and Canopy thinning

Pesticides - No known effective fungicides. Relaint systemic fungicide can be used to prevent any further fungi.



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