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Most City offices will be closed Thursday, June 19, to observe Juneteenth

The City of Portland recognizes Juneteenth as a formal day of remembrance to honor Black American history and the end of slavery in the United States. Learn about Juneteenth.

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Portland is a Sanctuary City

Verticillium Wilt

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Description

Verticilium wilt is caused by a soil-dwelling fungus that can cause water-transporting cells in the infected tree to shut down. This causes leaves to brown and die. Verticillium wilt usually only appears in damaged or otherwise stressed trees.


Susceptible species

Certain species of maple, ash, dogwood and linden trees to various degrees


Treatment

Plant verticillium-resistant species and keep nitrogenous fertilizers to a minimum.


Additional Information

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