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Plant Diseases/fungus growing on trunk of maple trees

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Question
fungus trunk maple trees
fungus trunk maple tre  
Also have on numerous other tree trunks throughout our 5 acre lot.  Have tried spraying a fungucide our local landscaper sold us, but hasn't helped.  We live in norther ohio.

Answer
Helen:

These fuzzy patches of mustard colored and gray green growths on the bark are lichens.  Not considered plant disease organisms. They are often seen on older or declining trees.  Often seen on trees and woody plants in the shade also.  Lichens will grow on fence posts and also rock.

Regards
Steve

Plant Diseases

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Dr Stephen Vann

Expertise

Plant Diseases and Disorders of Lawn Grasses, Trees, Vegetables,and Ornamentals

Experience

Plant Diseases Identification and Management

Education/Credentials
B.S. Botany --- Miss. State Univ. M.S. Plant Pathology --- Miss. State Univ. Ph.D. Plant Pathology --- Texas A & M Univ.

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