Clumps on branches - what are they?
Hello, I have a tree that has brown/black clumps on its branches and I'm not sure what they are or how to remove them. I have enclosed a picture and can send a few others if helpful to help identify the tree and what pests likely target these types of trees. I should mention that this tree is located 5 miles south of Itasca State Park. Thank you in advance for any light you may shed on this topic.
Becker County Minnesota
Thank you for your question.
Based on the photo, it looks like Black Knot Fungus. Please follow this link for research-based information - http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/black-knot/
Hope this helps.