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Engelmann Oak Treated for Fungal Infection

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photo of Caltech's Engelmann oak tree
The Engelmann oak tree is estimated to be more than 400 years old.
Credit: Peter Holderness

Institute arborists recently treated the ancient Engelmann oak tree adjacent to Millikan pond for a fungal infection that has left it struggling to take in water and nutrients. 

The condition of the tree, which is estimated to be more than 400 years old, has been exacerbated by the recent drought; as a result, the oak is now severely weakened, according to Delmy Emerson, director of buildings and grounds. The treatment to save the tree is considered the last resort.


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