Maple Tree Black Bark and White Spots - Disease? - Ask Extension
Looking to identify if our Maple tree has a disease and how to address it. Gloomy Scale perhaps? Thank you.
Knowledgebase
Maple Tree Black Bark and White Spots - Disease? #868474
Asked May 14, 2024, 9:34 PM EDT
Looking to identify if our Maple tree has a disease and how to address it. Gloomy Scale perhaps? Thank you.
Ramsey County Minnesota
Expert Response
Thank you for writing.
I need a picture of the lower three feet of the tree.
I fear that this is amarilla root rot. https://aplustree.com/oak-tree-diseases/#:~:text=Look%20for%20dark%2C%20oozing%20cankers,the%20name%20sudden%20oak%20death.&text=Phytophthora%20ramorum%2C%20an%20oomycete%20pathogen%2C%20causes%20sudden%20oak%20death.
https://tidcf.nrcan.gc.ca/en/diseases/factsheet/16
The diminuation of the tree canopy is very worrisome.
The U Minn does not recommend specific companies but here is how to find a tree care professional. https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional
I need a picture of the lower three feet of the tree.
I fear that this is amarilla root rot. https://aplustree.com/oak-tree-diseases/#:~:text=Look%20for%20dark%2C%20oozing%20cankers,the%20name%20sudden%20oak%20death.&text=Phytophthora%20ramorum%2C%20an%20oomycete%20pathogen%2C%20causes%20sudden%20oak%20death.
https://tidcf.nrcan.gc.ca/en/diseases/factsheet/16
The diminuation of the tree canopy is very worrisome.
The U Minn does not recommend specific companies but here is how to find a tree care professional. https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional
Thank you for the response. Please see attached for bottom tree view.
Thank you for writing back.
Please rake the stones away from the tree and remove the garden cloth. I need to see the tree as it enters the ground. Give me two pics, one from each side of the tree.
Thank you.
Please rake the stones away from the tree and remove the garden cloth. I need to see the tree as it enters the ground. Give me two pics, one from each side of the tree.
Thank you.
