Peach Tree Maintenance
I have a peach tree that was planted in a small (3'x 2') area surrounded by cement (the patio). The tree has recently developed a cavity at the base of the trunk. Not sure what it is or how to treat it.
Certified GKH Gardening Expert
It may have canker. This article will have more information: https://www.gardeningknowhow.com/plant-problems/disease/weeping-amber-in-trees.htm