Tree Disease - Ask Extension
Hi. I have a pear tree that was planted about 5 years ago. It seems to have issues on the trunk. Pictures attached.
What should I do?
Knowledgebase
Tree Disease #870378
Asked May 28, 2024, 10:04 AM EDT
Hi. I have a pear tree that was planted about 5 years ago. It seems to have issues on the trunk. Pictures attached.
What should I do?
Fillmore County Minnesota
Expert Response
Canker (a symptom of disease) is present on the trunk. We don't know what pathogen caused it, but fire blight is likely. Compare here:
https://images.app.goo.gl/7A5G1RbyG5mn1Chu7
The only way to know for sure is to send samples of the affected area to the Minnesota Plant Disease Clinic.
Although twig and branch cankers can often be removed, trees with trunk cankers are usually lost.
Learn more here:
https://extension.psu.edu/apple-and-pear-disease-fire-blight-dormant-removal-of-cankers
I you decide to send samples to the Plant Disease Clinic, go here to learn how to do that:
https://pdc.umn.edu/
https://images.app.goo.gl/7A5G1RbyG5mn1Chu7
The only way to know for sure is to send samples of the affected area to the Minnesota Plant Disease Clinic.
Although twig and branch cankers can often be removed, trees with trunk cankers are usually lost.
Learn more here:
https://extension.psu.edu/apple-and-pear-disease-fire-blight-dormant-removal-of-cankers
I you decide to send samples to the Plant Disease Clinic, go here to learn how to do that:
https://pdc.umn.edu/
