Santa Rosa Plum Tree
I just noticed the leaves on my plum tree are beginning to turn brown. Really bad on the west side. I check it all the time and have never noticed anything but today I noticed a big problem. I did some further investigation and found some kind of burrowing bug in a branch. I removed that branch but couldn't find any more. Should I remove the unripened fruit to reduce stress on the tree? Any suggestions on what could be causing the problem and a possible solution? Thanks for your help Dean Blakeslee
Certified GKH Gardening Expert
This is likely damage from the American Plum Borer.
The link below will help you.