pear tree issues

Asked March 21, 2015, 11:14 AM EDT

my pear trees have developed black covering the bark and are non-producing. What should I do to correct this?

Leelanau County Michigan

1 Response

From what can be seen in the picture , the black is in the lower right. This appears to be a canker which can be caused by various diseases such as fire blight. Without knowing more about the tree (age, location, other symptoms, etc.) it would be difficult to determine the cause. This may or may not be related to your lack of fruit production. Lack of production can be caused by various factors such excessive or deficient nutrients, insect pests, lack of pollinators, reduced vigor due to disease, frost kill, old ageā€¦and the list goes on. These links may give you more insight:

https://connect.msu.edu/p3aqza0x027/?launcher=false&fcsContent=true&pbMode=normal

http://www.ext.colostate.edu/pubs/garden/02907.html

http://extension.psu.edu/plants/gardening/fphg/pome/diseases/fire-blight

http://www.msusoiltest.com

I hope this helps,