Magnolia tree turned black - Ask Extension
Hello, over the past month my royal star magnolia tree went from green and healthy to all black. What is wrong? Is there anything I can do to fix it, ...
Knowledgebase
Magnolia tree turned black #946383
Asked October 02, 2026, 5:16 PM EDT
Hello, over the past month my royal star magnolia tree went from green and healthy to all black. What is wrong? Is there anything I can do to fix it, or is it dead?
Dakota County Minnesota
Expert Response
Thanks for the question. Your magnolia tree has magnolia scale insects. Here is a link to more information on identification and treatment: https://extension.umn.edu/garden-and-home/yard-and-garden/yard-and-garden-insects/scale-insects
Typically, the leaves turn black from honeydew, the sweet substance that causes mold on the leaves, which turns black. It alone is typically not detrimental.
I cannot determine form the photo if your tree is dead.
Paul -Tree Care Advisor volunteer
