Knowledgebase
Diseased trees #875521
Asked July 01, 2024, 2:43 PM EDT
Oakland County Michigan
Expert Response
It appears the trunk is covered in lichens. Lichens are actually two organisms, a fungi and algae. The two organisms occur together and form a symbiotic, or mutually beneficial, relationship. The fungi provide protection and a place for algae to live while the algae provide energy via photosynthesis. There are thousands of types of lichens made up of various fungi and algae, and some types of cyanobacteria.
What are lichens and what are they doing on my tree? - MSU Extension
It also looks like the tree is suffering from a nutrient deficiency. See article for treatment.
It isn't fall yet, so why are my tree's leaves yellow? - MSU Extension
You may want to have an arborist come out and assess your trees. Find certified arborists by searching under the “Find an arborist” tab, and using your zip code here—-www.treesaregood.org
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