I have this early peach of unknown variety planted about 12 yrs ago. 7 years ago, I grafted a methley plum to it. The peach tree has been doing very well until couple of years ago, gave me good crop of early peach in mid July. The methley branch has been growing very vigorously all along, it finally bear very good crop this year.
For the past couple years, I notice the peach branches are growing out fewer and fewer new branches. And this year, the peaches are much smaller than the plum from the same tree.
What happened to the peach branches? Anything I can do to rejuvenate them? Since the plum branch is growing very well, so I can assume the root system is still ok.
Here are some pictures of the peach branches and the plum branch. Obviously, the first 3 are peach, the last 2 are plum. All from the same tree. There are 3-4 branches of peach from the main trunk, they are all doing very poorly.