Boxwood Blight - Ask Extension
I suspect the brown spots on my boxwoods are the boxwood blight but need to know for sure. How can I have them analyzed? I have 50+ in my yard at diff...
Knowledgebase
Boxwood Blight #874694
Asked June 25, 2024, 7:05 PM EDT
I suspect the brown spots on my boxwoods are the boxwood blight but need to know for sure. How can I have them analyzed? I have 50+ in my yard at different ages so I am deeply concerned.
Ingham County Michigan
Expert Response
Hello Gail,
I don’t see the characteristic blackening of stems that are usually present. However, you are right to have this looked at by professionals.
You can email pictures to <personal data hidden> That is the MSU Plant and Pest Diagnostic lab. The professional diagnostician will give you an opinion. This is a free service.
If they decide they need a sample branch and leaves they will let you know. There is a modest fee for submitting samples. The form, instructions and address are on their website.(do not send samples in on Friday or just before a holiday, or the samples will not be fresh when they return to work).
https://www.canr.msu.edu/pestid/
Also, here are bulletins , should you need them-
https://www.canr.msu.edu/news/boxwood-blight-disease-identified-in-michigan
https://www.extension.purdue.edu/extmedia/BP/BP-203-W.pdf
https://cals.cornell.edu/new-york-state-integrated-pest-management/outreach-education/fact-sheets/box-tree-moth/alternatives-boxwood
I don’t see the characteristic blackening of stems that are usually present. However, you are right to have this looked at by professionals.
You can email pictures to <personal data hidden> That is the MSU Plant and Pest Diagnostic lab. The professional diagnostician will give you an opinion. This is a free service.
If they decide they need a sample branch and leaves they will let you know. There is a modest fee for submitting samples. The form, instructions and address are on their website.(do not send samples in on Friday or just before a holiday, or the samples will not be fresh when they return to work).
https://www.canr.msu.edu/pestid/
Also, here are bulletins , should you need them-
https://www.canr.msu.edu/news/boxwood-blight-disease-identified-in-michigan
https://www.extension.purdue.edu/extmedia/BP/BP-203-W.pdf
https://cals.cornell.edu/new-york-state-integrated-pest-management/outreach-education/fact-sheets/box-tree-moth/alternatives-boxwood
